1
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Rigon G, Albertazzi B, Pikuz T, Mabey P, Bouffetier V, Ozaki N, Vinci T, Barbato F, Falize E, Inubushi Y, Kamimura N, Katagiri K, Makarov S, Manuel MJE, Miyanishi K, Pikuz S, Poujade O, Sueda K, Togashi T, Umeda Y, Yabashi M, Yabuuchi T, Gregori G, Kodama R, Casner A, Koenig M. Micron-scale phenomena observed in a turbulent laser-produced plasma. Nat Commun 2021; 12:2679. [PMID: 33976145 PMCID: PMC8113596 DOI: 10.1038/s41467-021-22891-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/29/2021] [Indexed: 11/09/2022] Open
Abstract
Turbulence is ubiquitous in the universe and in fluid dynamics. It influences a wide range of high energy density systems, from inertial confinement fusion to astrophysical-object evolution. Understanding this phenomenon is crucial, however, due to limitations in experimental and numerical methods in plasma systems, a complete description of the turbulent spectrum is still lacking. Here, we present the measurement of a turbulent spectrum down to micron scale in a laser-plasma experiment. We use an experimental platform, which couples a high power optical laser, an x-ray free-electron laser and a lithium fluoride crystal, to study the dynamics of a plasma flow with micrometric resolution (~1μm) over a large field of view (>1 mm2). After the evolution of a Rayleigh–Taylor unstable system, we obtain spectra, which are overall consistent with existing turbulent theory, but present unexpected features. This work paves the way towards a better understanding of numerous systems, as it allows the direct comparison of experimental results, theory and numerical simulations. Turbulence effects explored use macroscale systems in general. Here the authors generate a turbulent plasma using laser irradiation of a solid target and study the dynamics of the plasma flow at the micron-scale by using scattering of an XFEL beam.
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Affiliation(s)
- G Rigon
- LULI, CNRS, CEA, École Polytechnique, UPMC, Univ Paris 06: Sorbonne Universités, Institut Polytechnique de Paris, F-91128 Palaiseau cedex, France.
| | - B Albertazzi
- LULI, CNRS, CEA, École Polytechnique, UPMC, Univ Paris 06: Sorbonne Universités, Institut Polytechnique de Paris, F-91128 Palaiseau cedex, France
| | - T Pikuz
- Institute for Open and Transdisciplinary Research Initiative, Osaka University, Osaka, Japan.,Joint Institute for High Temperatures RAS, Moscow, Russia
| | - P Mabey
- LULI, CNRS, CEA, École Polytechnique, UPMC, Univ Paris 06: Sorbonne Universités, Institut Polytechnique de Paris, F-91128 Palaiseau cedex, France
| | - V Bouffetier
- Université de Bordeaux-CNRS-CEA, CELIA, UMR 5107, Talence, France
| | - N Ozaki
- Graduate School of Engineering, Osaka University, Osaka, Japan.,Institute of Laser Engineering, Osaka University, Suita, Osaka, Japan
| | - T Vinci
- LULI, CNRS, CEA, École Polytechnique, UPMC, Univ Paris 06: Sorbonne Universités, Institut Polytechnique de Paris, F-91128 Palaiseau cedex, France
| | - F Barbato
- Université de Bordeaux-CNRS-CEA, CELIA, UMR 5107, Talence, France
| | | | - Y Inubushi
- Japan Synchrotron Radiation Research Institute, Hyogo, Japan.,RIKEN SPring-8 Center, Hyogo, Japan
| | - N Kamimura
- Graduate School of Engineering, Osaka University, Osaka, Japan
| | - K Katagiri
- Graduate School of Engineering, Osaka University, Osaka, Japan
| | - S Makarov
- Joint Institute for High Temperatures RAS, Moscow, Russia.,Department of Physics of accelerators and radiation medicine, Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia
| | - M J-E Manuel
- General Atomics, Inertial Fusion Technologies, San Diego, CA, USA
| | | | - S Pikuz
- Joint Institute for High Temperatures RAS, Moscow, Russia.,National Research Nuclear University 'MEPhi', Moscow, Russia
| | - O Poujade
- CEA-DAM, DIF, Arpajon, France.,Université Paris-Saclay, CEA, LMCE, Bruyères-le-Châtel, France
| | - K Sueda
- RIKEN SPring-8 Center, Hyogo, Japan
| | - T Togashi
- Japan Synchrotron Radiation Research Institute, Hyogo, Japan.,RIKEN SPring-8 Center, Hyogo, Japan
| | - Y Umeda
- Graduate School of Engineering, Osaka University, Osaka, Japan.,Institute for Planetary Materials, Okayama University, Tottori, Japan
| | - M Yabashi
- Japan Synchrotron Radiation Research Institute, Hyogo, Japan.,RIKEN SPring-8 Center, Hyogo, Japan
| | - T Yabuuchi
- Japan Synchrotron Radiation Research Institute, Hyogo, Japan.,RIKEN SPring-8 Center, Hyogo, Japan
| | - G Gregori
- Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom
| | - R Kodama
- Graduate School of Engineering, Osaka University, Osaka, Japan
| | - A Casner
- Université de Bordeaux-CNRS-CEA, CELIA, UMR 5107, Talence, France.,CEA-CESTA, 15 avenue des Sablières, CS 60001, 33116 Le Barp Cedex, France
| | - M Koenig
- LULI, CNRS, CEA, École Polytechnique, UPMC, Univ Paris 06: Sorbonne Universités, Institut Polytechnique de Paris, F-91128 Palaiseau cedex, France.,Graduate School of Engineering, Osaka University, Osaka, Japan
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2
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Katagiri K, Ozaki N, Ohmura S, Albertazzi B, Hironaka Y, Inubushi Y, Ishida K, Koenig M, Miyanishi K, Nakamura H, Nishikino M, Okuchi T, Sato T, Seto Y, Shigemori K, Sueda K, Tange Y, Togashi T, Umeda Y, Yabashi M, Yabuuchi T, Kodama R. Liquid Structure of Tantalum under Internal Negative Pressure. Phys Rev Lett 2021; 126:175503. [PMID: 33988455 DOI: 10.1103/physrevlett.126.175503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/09/2021] [Accepted: 03/31/2021] [Indexed: 06/12/2023]
Abstract
In situ femtosecond x-ray diffraction measurements and ab initio molecular dynamics simulations were performed to study the liquid structure of tantalum shock released from several hundred gigapascals (GPa) on the nanosecond timescale. The results show that the internal negative pressure applied to the liquid tantalum reached -5.6 (0.8) GPa, suggesting the existence of a liquid-gas mixing state due to cavitation. This is the first direct evidence to prove the classical nucleation theory which predicts that liquids with high surface tension can support GPa regime tensile stress.
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Affiliation(s)
- K Katagiri
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
- Institute of Laser Engineering, Osaka University, Osaka 565-0871, Japan
| | - N Ozaki
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
- Institute of Laser Engineering, Osaka University, Osaka 565-0871, Japan
| | - S Ohmura
- Research Center for Condensed Matter Physics, Department of Environmental and Civil Engineering, Hiroshima Institute of Technology, Hiroshima 731-5193 Japan
| | - B Albertazzi
- LULI, CNRS, CEA, Ecole Polytechnique, UPMC, Université Paris 06: Sorbonne Universites, Institut Polytechnique de Paris, F-91128 Palaiseau cedex, France
| | - Y Hironaka
- Institute of Laser Engineering, Osaka University, Osaka 565-0871, Japan
- Open and Transdisciplinary Research Initiative, OTRI, Osaka University, Osaka 565-0871, Japan
| | - Y Inubushi
- Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, Hyogo 679-5148, Japan
| | - K Ishida
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - M Koenig
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
- LULI, CNRS, CEA, Ecole Polytechnique, UPMC, Université Paris 06: Sorbonne Universites, Institut Polytechnique de Paris, F-91128 Palaiseau cedex, France
| | - K Miyanishi
- RIKEN SPring-8 Center, Hyogo 679-5148, Japan
| | - H Nakamura
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - M Nishikino
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kyoto 619-0215, Japan
| | - T Okuchi
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka 590-0494, Japan
| | - T Sato
- Graduate School of Science, Hiroshima University, Hiroshima 739-8526, Japan
| | - Y Seto
- Graduate School of Science, Kobe University, Hyogo 657-0013, Japan
| | - K Shigemori
- Institute of Laser Engineering, Osaka University, Osaka 565-0871, Japan
| | - K Sueda
- RIKEN SPring-8 Center, Hyogo 679-5148, Japan
| | - Y Tange
- Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
| | - T Togashi
- Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, Hyogo 679-5148, Japan
| | - Y Umeda
- Institute for Planetary Materials, Okayama University, Tottori 682-0193, Japan
| | - M Yabashi
- Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, Hyogo 679-5148, Japan
| | - T Yabuuchi
- Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, Hyogo 679-5148, Japan
| | - R Kodama
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
- Institute of Laser Engineering, Osaka University, Osaka 565-0871, Japan
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3
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Fushitani M, Sasaki Y, Matsuda A, Fujise H, Kawabe Y, Hashigaya K, Owada S, Togashi T, Nakajima K, Yabashi M, Hikosaka Y, Hishikawa A. Multielectron-Ion Coincidence Spectroscopy of Xe in Extreme Ultraviolet Laser Fields: Nonlinear Multiple Ionization via Double Core-Hole States. Phys Rev Lett 2020; 124:193201. [PMID: 32469563 DOI: 10.1103/physrevlett.124.193201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
Ultrafast multiphoton ionization of Xe in strong extreme ultraviolet free-electron laser (FEL) fields (91 eV, 30 fs, 1.6×10^{12} W/cm^{2}) has been investigated by multielectron-ion coincidence spectroscopy. The electron spectra recorded in coincidence with Xe^{4+} show characteristic features associated with two-photon absorption to the 4d^{-2} double core-hole (DCH) states and subsequent Auger decay. It is found that the pathway via the DCH states, which has eluded clear identification in previous studies, makes a large contribution to the multiple ionization, despite the long FEL pulse duration compared with the lifetime of the 4d core-hole states.
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Affiliation(s)
- M Fushitani
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan
- RIKEN, SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - Y Sasaki
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - A Matsuda
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan
- RIKEN, SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - H Fujise
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan
- RIKEN, SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - Y Kawabe
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - K Hashigaya
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - S Owada
- RIKEN, SPring-8 Center, Sayo, Hyogo 679-5148, Japan
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - T Togashi
- RIKEN, SPring-8 Center, Sayo, Hyogo 679-5148, Japan
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - K Nakajima
- RIKEN, SPring-8 Center, Sayo, Hyogo 679-5148, Japan
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - M Yabashi
- RIKEN, SPring-8 Center, Sayo, Hyogo 679-5148, Japan
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - Y Hikosaka
- RIKEN, SPring-8 Center, Sayo, Hyogo 679-5148, Japan
- Institute of Liberal Arts and Sciences, University of Toyama, Toyama 930-0194, Japan
| | - A Hishikawa
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan
- RIKEN, SPring-8 Center, Sayo, Hyogo 679-5148, Japan
- Research Center for Materials Science, Nagoya University, Nagoya, Aichi 464-8602, Japan
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4
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Kubota Y, Suzuki M, Katayama T, Yamamoto K, Tono K, Inubushi Y, Seki T, Takanashi K, Wadati H, Yabashi M. Polarization control with an X-ray phase retarder for high-time-resolution pump-probe experiments at SACLA. J Synchrotron Radiat 2019; 26:1139-1143. [PMID: 31274437 PMCID: PMC6613128 DOI: 10.1107/s1600577519006222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Accepted: 05/02/2019] [Indexed: 06/09/2023]
Abstract
Control of the polarization of an X-ray free-electron laser (XFEL) has been performed using an X-ray phase retarder (XPR) in combination with an arrival timing diagnostic on BL3 of the SPring-8 Angstrom Compact free-electron LAser (SACLA). To combine with the timing diagnostic, a pink beam was incident on the XPR crystal and then monochromated in the vicinity of samples. A high degree of circular polarization of ∼97% was obtained experimentally at 11.567 keV, which agreed with calculations based on the dynamical theory of X-ray diffraction. This system enables pump-probe experiments to be operated using circular polarization with a time resolution of 40 fs to investigate ultrafast magnetic phenomena.
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Affiliation(s)
- Y. Kubota
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - M. Suzuki
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - T. Katayama
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - K. Yamamoto
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - K. Tono
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Y. Inubushi
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - T. Seki
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
- Center for Spintronics Research Network, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - K. Takanashi
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
- Center for Spintronics Research Network, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - H. Wadati
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - M. Yabashi
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
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5
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Alonso-Mori R, Asa K, Bergmann U, Brewster AS, Chatterjee R, Cooper JK, Frei HM, Fuller FD, Goggins E, Gul S, Fukuzawa H, Iablonskyi D, Ibrahim M, Katayama T, Kroll T, Kumagai Y, McClure BA, Messinger J, Motomura K, Nagaya K, Nishiyama T, Saracini C, Sato Y, Sauter NK, Sokaras D, Takanashi T, Togashi T, Ueda K, Weare WW, Weng TC, Yabashi M, Yachandra VK, Young ID, Zouni A, Kern JF, Yano J. Towards characterization of photo-excited electron transfer and catalysis in natural and artificial systems using XFELs. Faraday Discuss 2018; 194:621-638. [PMID: 27711803 DOI: 10.1039/c6fd00084c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ultra-bright femtosecond X-ray pulses provided by X-ray Free Electron Lasers (XFELs) open capabilities for studying the structure and dynamics of a wide variety of biological and inorganic systems beyond what is possible at synchrotron sources. Although the structure and chemistry at the catalytic sites have been studied intensively in both biological and inorganic systems, a full understanding of the atomic-scale chemistry requires new approaches beyond the steady state X-ray crystallography and X-ray spectroscopy at cryogenic temperatures. Following the dynamic changes in the geometric and electronic structure at ambient conditions, while overcoming X-ray damage to the redox active catalytic center, is key for deriving reaction mechanisms. Such studies become possible by using the intense and ultra-short femtosecond X-ray pulses from an XFEL, where sample is probed before it is damaged. We have developed methodology for simultaneously collecting X-ray diffraction data and X-ray emission spectra, using an energy dispersive spectrometer, at ambient conditions, and used this approach to study the room temperature structure and intermediate states of the photosynthetic water oxidizing metallo-protein, photosystem II. Moreover, we have also used this setup to simultaneously collect the X-ray emission spectra from multiple metals to follow the ultrafast dynamics of light-induced charge transfer between multiple metal sites. A Mn-Ti containing system was studied at an XFEL to demonstrate the efficacy and potential of this method.
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Affiliation(s)
- R Alonso-Mori
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - K Asa
- Department of Physics, Graduate School of Science, Kyoto U., Kyoto, 606-8502, Japan
| | - U Bergmann
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - A S Brewster
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA.
| | - R Chatterjee
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA.
| | - J K Cooper
- Joint Center for Artificial Photosynthesis (JCAP), Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA
| | - H M Frei
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA.
| | - F D Fuller
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA.
| | - E Goggins
- Dept. of Chemistry, North Carolina State University, 2620 Yarborough Rd., Raleigh, NC 27695-8204, USA
| | - S Gul
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA.
| | - H Fukuzawa
- IMRAM, Tohoku U., Sendai 980-8577, Japan and RIKEN SPring-8 Center, Kouto, Sayo, Hyogo 679-5148, Japan
| | | | - M Ibrahim
- Institut für Biologie, Humboldt-Universität zu Berlin, D-10099 Berlin, Germany
| | - T Katayama
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8/SACLA, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - T Kroll
- Stanford Synchrotron Radiation Lightsource (SSRL), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Y Kumagai
- IMRAM, Tohoku U., Sendai 980-8577, Japan
| | - B A McClure
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA.
| | - J Messinger
- Institutionen för Kemi, Kemiskt Biologiskt Centrum, Umeå Universitet, Umeå, Sweden
| | - K Motomura
- IMRAM, Tohoku U., Sendai 980-8577, Japan and RIKEN SPring-8 Center, Kouto, Sayo, Hyogo 679-5148, Japan
| | - K Nagaya
- Department of Physics, Graduate School of Science, Kyoto U., Kyoto, 606-8502, Japan and RIKEN SPring-8 Center, Kouto, Sayo, Hyogo 679-5148, Japan
| | - T Nishiyama
- Department of Physics, Graduate School of Science, Kyoto U., Kyoto, 606-8502, Japan
| | - C Saracini
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA.
| | - Y Sato
- Department of Physics, Graduate School of Science, Kyoto U., Kyoto, 606-8502, Japan
| | - N K Sauter
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA.
| | - D Sokaras
- Stanford Synchrotron Radiation Lightsource (SSRL), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | | | - T Togashi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8/SACLA, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - K Ueda
- IMRAM, Tohoku U., Sendai 980-8577, Japan and RIKEN SPring-8 Center, Kouto, Sayo, Hyogo 679-5148, Japan
| | - W W Weare
- Dept. of Chemistry, North Carolina State University, 2620 Yarborough Rd., Raleigh, NC 27695-8204, USA
| | - T-C Weng
- Center for High Pressure Science & Technology Advanced Research, Shanghai, China
| | - M Yabashi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8/SACLA, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - V K Yachandra
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA.
| | - I D Young
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA.
| | - A Zouni
- Institut für Biologie, Humboldt-Universität zu Berlin, D-10099 Berlin, Germany
| | - J F Kern
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA and Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA.
| | - J Yano
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA. and Joint Center for Artificial Photosynthesis (JCAP), Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA and IMRAM, Tohoku U., Sendai 980-8577, Japan
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6
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Yamamoto S, Omi T, Akai H, Kubota Y, Takahashi Y, Suzuki Y, Hirata Y, Yamamoto K, Yukawa R, Horiba K, Yumoto H, Koyama T, Ohashi H, Owada S, Tono K, Yabashi M, Shigemasa E, Yamamoto S, Kotsugi M, Wadati H, Kumigashira H, Arima T, Shin S, Matsuda I. Element Selectivity in Second-Harmonic Generation of GaFeO_{3} by a Soft-X-Ray Free-Electron Laser. Phys Rev Lett 2018; 120:223902. [PMID: 29906133 DOI: 10.1103/physrevlett.120.223902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Indexed: 05/27/2023]
Abstract
Nonlinear optical frequency conversion has been challenged to move down to the extreme ultraviolet and x-ray region. However, the extremely low signals have allowed researchers to only perform transmission experiments of the gas phase or ultrathin films. Here, we report second harmonic generation (SHG) of the reflected beam of a soft x-ray free-electron laser from a solid, which is enhanced by the resonant effect. The observation revealed that the double resonance condition can be met by absorption edges for transition metal oxides in the soft x-ray range, and this suggests that the resonant SHG technique can be applicable to a wide range of materials. We discuss the possibility of element-selective SHG spectroscopy measurements in the soft x-ray range.
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Affiliation(s)
- Sh Yamamoto
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - T Omi
- Department of Advanced Materials Science, The University of Tokyo, Kashiwa 277-8561, Japan
| | - H Akai
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Kubota
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Takahashi
- Tokyo University of Science, Katsushika 125-8585, Japan
| | - Y Suzuki
- Tokyo University of Science, Katsushika 125-8585, Japan
| | - Y Hirata
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - K Yamamoto
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - R Yukawa
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan
| | - K Horiba
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan
| | - H Yumoto
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - T Koyama
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - H Ohashi
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - S Owada
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - K Tono
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - E Shigemasa
- UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585, Japan
- Sokendai (the Graduate University for Advanced Studies), Okazaki 444- 8585, Japan
| | - S Yamamoto
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - M Kotsugi
- Tokyo University of Science, Katsushika 125-8585, Japan
| | - H Wadati
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - H Kumigashira
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan
| | - T Arima
- Department of Advanced Materials Science, The University of Tokyo, Kashiwa 277-8561, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - S Shin
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - I Matsuda
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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7
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Walker PA, Alesini PD, Alexandrova AS, Anania MP, Andreev NE, Andriyash I, Aschikhin A, Assmann RW, Audet T, Bacci A, Barna IF, Beaton A, Beck A, Beluze A, Bernhard A, Bielawski S, Bisesto FG, Boedewadt J, Brandi F, Bringer O, Brinkmann R, Bründermann E, Büscher M, Bussmann M, Bussolino GC, Chance A, Chanteloup JC, Chen M, Chiadroni E, Cianchi A, Clarke J, Cole J, Couprie ME, Croia M, Cros B, Dale J, Dattoli G, Delerue N, Delferriere O, Delinikolas P, Dias J, Dorda U, Ertel K, Ferran Pousa A, Ferrario M, Filippi F, Fils J, Fiorito R, Fonseca RA, Galimberti M, Gallo A, Garzella D, Gastinel P, Giove D, Giribono A, Gizzi LA, Grüner FJ, Habib AF, Haefner LC, Heinemann T, Hidding B, Holzer BJ, Hooker SM, Hosokai T, Irman A, Jaroszynski DA, Jaster-Merz S, Joshi C, Kaluza MC, Kando M, Karger OS, Karsch S, Khazanov E, Khikhlukha D, Knetsch A, Kocon D, Koester P, Kononenko O, Korn G, Kostyukov I, Labate L, Lechner C, Leemans WP, Lehrach A, Li FY, Li X, Libov V, Lifschitz A, Litvinenko V, Lu W, Maier AR, Malka V, Manahan GG, Mangles SPD, Marchetti B, Marocchino A, Martinez de la Ossa A, Martins JL, Massimo F, Mathieu F, Maynard G, Mehrling TJ, Molodozhentsev AY, Mosnier A, Mostacci A, Mueller AS, Najmudin Z, Nghiem PAP, Nguyen F, Niknejadi P, Osterhoff J, Papadopoulos D, Patrizi B, Pattathil R, Petrillo V, Pocsai MA, Poder K, Pompili R, Pribyl L, Pugacheva D, Romeo S, Rossi AR, Roussel E, Sahai AA, Scherkl P, Schramm U, Schroeder CB, Schwindling J, Scifo J, Serafini L, Sheng ZM, Silva LO, Silva T, Simon C, Sinha U, Specka A, Streeter MJV, Svystun EN, Symes D, Szwaj C, Tauscher G, Thomas AGR, Thompson N, Toci G, Tomassini P, Vaccarezza C, Vannini M, Vieira JM, Villa F, Wahlström CG, Walczak R, Weikum MK, Welsch CP, Wiemann C, Wolfenden J, Xia G, Yabashi M, Yu L, Zhu J, Zigler A. Horizon 2020 EuPRAXIA design study. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/874/1/012029] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Inada T, Yamazaki T, Namba T, Asai S, Kobayashi T, Tamasaku K, Tanaka Y, Inubushi Y, Sawada K, Yabashi M, Ishikawa T, Matsuo A, Kawaguchi K, Kindo K, Nojiri H. Search for Two-Photon Interaction with Axionlike Particles Using High-Repetition Pulsed Magnets and Synchrotron X Rays. Phys Rev Lett 2017; 118:071803. [PMID: 28256869 DOI: 10.1103/physrevlett.118.071803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Indexed: 06/06/2023]
Abstract
We report on new results of a search for a two-photon interaction with axionlike particles (ALPs). The experiment is carried out at a synchrotron radiation facility using a "light shining through a wall (LSW)" technique. For this purpose, we develop a novel pulsed-magnet system, composed of multiple racetrack magnets and a transportable power supply. It produces fields of about 10 T over 0.8 m with a high repetition rate of 0.2 Hz and yields a new method of probing a vacuum with high intensity fields. The data obtained with a total of 27 676 pulses provide a limit on the ALP-two-photon coupling constant that is more stringent by a factor of 5.2 compared to a previous x-ray LSW limit for the ALP mass ≲0.1 eV.
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Affiliation(s)
- T Inada
- International Center for Elementary Particle Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T Yamazaki
- International Center for Elementary Particle Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T Namba
- International Center for Elementary Particle Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - S Asai
- Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T Kobayashi
- International Center for Elementary Particle Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - K Tamasaku
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Y Tanaka
- Graduate School of Material Science, University of Hyogo, Kamigori, Hyogo 678-1297, Japan
| | - Y Inubushi
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - K Sawada
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - T Ishikawa
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - A Matsuo
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8581, Japan
| | - K Kawaguchi
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8581, Japan
| | - K Kindo
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8581, Japan
| | - H Nojiri
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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9
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Ruiz-Lopez M, Faenov A, Pikuz T, Ozaki N, Mitrofanov A, Albertazzi B, Hartley N, Matsuoka T, Ochante Y, Tange Y, Yabuuchi T, Habara T, Tanaka KA, Inubushi Y, Yabashi M, Nishikino M, Kawachi T, Pikuz S, Ishikawa T, Kodama R, Bleiner D. Coherent X-ray beam metrology using 2D high-resolution Fresnel-diffraction analysis. J Synchrotron Radiat 2017; 24:196-204. [PMID: 28009559 DOI: 10.1107/s1600577516016568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 10/17/2016] [Indexed: 06/06/2023]
Abstract
Direct metrology of coherent short-wavelength beamlines is important for obtaining operational beam characteristics at the experimental site. However, since beam-time limitation imposes fast metrology procedures, a multi-parametric metrology from as low as a single shot is desirable. Here a two-dimensional (2D) procedure based on high-resolution Fresnel diffraction analysis is discussed and applied, which allowed an efficient and detailed beamline characterization at the SACLA XFEL. So far, the potential of Fresnel diffraction for beamline metrology has not been fully exploited because its high-frequency fringes could be only partly resolved with ordinary pixel-limited detectors. Using the high-spatial-frequency imaging capability of an irradiated LiF crystal, 2D information of the coherence degree, beam divergence and beam quality factor M2 were retrieved from simple diffraction patterns. The developed beam metrology was validated with a laboratory reference laser, and then successfully applied at a beamline facility, in agreement with the source specifications.
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Affiliation(s)
- M Ruiz-Lopez
- Empa, Materials Science and Technology, Dübendorf, Switzerland
| | - A Faenov
- Institute for Academic Initiatives, Osaka University, Suita, Osaka, Japan
| | - T Pikuz
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia
| | - N Ozaki
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | - A Mitrofanov
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia
| | - B Albertazzi
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | - N Hartley
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | - T Matsuoka
- Institute for Academic Initiatives, Osaka University, Suita, Osaka, Japan
| | - Y Ochante
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | - Y Tange
- JASRI/SPring-8, Sayo, Hyogo, Japan
| | - T Yabuuchi
- RIKEN Harima Institute, Sayo, Hyogo, Japan
| | - T Habara
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | - K A Tanaka
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | | | | | - M Nishikino
- Kansai Photon Research Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto, Japan
| | - T Kawachi
- Kansai Photon Research Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto, Japan
| | - S Pikuz
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia
| | | | - R Kodama
- Institute for Academic Initiatives, Osaka University, Suita, Osaka, Japan
| | - D Bleiner
- Empa, Materials Science and Technology, Dübendorf, Switzerland
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10
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Nagaya K, Iablonskyi D, Golubev NV, Matsunami K, Fukuzawa H, Motomura K, Nishiyama T, Sakai T, Tachibana T, Mondal S, Wada S, Prince KC, Callegari C, Miron C, Saito N, Yabashi M, Demekhin PV, Cederbaum LS, Kuleff AI, Yao M, Ueda K. Interatomic Coulombic decay cascades in multiply excited neon clusters. Nat Commun 2016; 7:13477. [PMID: 27917867 PMCID: PMC5150215 DOI: 10.1038/ncomms13477] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 10/07/2016] [Indexed: 11/21/2022] Open
Abstract
In high-intensity laser light, matter can be ionized by direct multiphoton absorption even at photon energies below the ionization threshold. However on tuning the laser to the lowest resonant transition, the system becomes multiply excited, and more efficient, indirect ionization pathways become operative. These mechanisms are known as interatomic Coulombic decay (ICD), where one of the species de-excites to its ground state, transferring its energy to ionize another excited species. Here we show that on tuning to a higher resonant transition, a previously unknown type of interatomic Coulombic decay, intra-Rydberg ICD occurs. In it, de-excitation of an atom to a close-lying Rydberg state leads to electron emission from another neighbouring Rydberg atom. Moreover, systems multiply excited to higher Rydberg states will decay by a cascade of such processes, producing even more ions. The intra-Rydberg ICD and cascades are expected to be ubiquitous in weakly-bound systems exposed to high-intensity resonant radiation. Interatomic Coulombic decay (ICD) is a relaxation of an atom in a weakly bound environment by the transfer of excess energy to ionize the neighbouring atom. Here the authors observe intra-Rydberg ICD in neon clusters, which is a decay that involves the ionization of Rydberg atoms in the cluster.
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Affiliation(s)
- K Nagaya
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.,RIKEN SPring-8 Center, 679-5148 Hyogo, Japan
| | - D Iablonskyi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - N V Golubev
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, D-69120 Heidelberg, Germany
| | - K Matsunami
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - H Fukuzawa
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - K Motomura
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - T Nishiyama
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - T Sakai
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - T Tachibana
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - S Mondal
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - S Wada
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Department of Physical Science, Hiroshima University, 739-8526 Higashi-Hiroshima, Japan
| | - K C Prince
- Elettra-Sincrotrone Trieste, Basovizza, Trieste I-34149, Italy
| | - C Callegari
- Elettra-Sincrotrone Trieste, Basovizza, Trieste I-34149, Italy
| | - C Miron
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, FR-91192 Gif-sur-Yvette Cedex, France.,Extreme Light Infrastructure-Nuclear Physics (ELI-NP), 'Horia Hulubei' National Institute for Physics and Nuclear Engineering, RO-077125 Măgurele, Jud. Ilfov, Romania
| | - N Saito
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,National Metrology Institute of Japan, AIST, 305-8568 Tsukuba, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan
| | - Ph V Demekhin
- Theoretische Atom- und Molekülphysik, Institut für Physik und CINSaT, Universität Kassel, D-34132 Kassel, Germany
| | - L S Cederbaum
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, D-69120 Heidelberg, Germany
| | - A I Kuleff
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, D-69120 Heidelberg, Germany
| | - M Yao
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.,Deceased
| | - K Ueda
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
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11
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Dean MPM, Cao Y, Liu X, Wall S, Zhu D, Mankowsky R, Thampy V, Chen XM, Vale JG, Casa D, Kim J, Said AH, Juhas P, Alonso-Mori R, Glownia JM, Robert A, Robinson J, Sikorski M, Song S, Kozina M, Lemke H, Patthey L, Owada S, Katayama T, Yabashi M, Tanaka Y, Togashi T, Liu J, Rayan Serrao C, Kim BJ, Huber L, Chang CL, McMorrow DF, Först M, Hill JP. Ultrafast energy- and momentum-resolved dynamics of magnetic correlations in the photo-doped Mott insulator Sr2IrO4. Nat Mater 2016; 15:601-5. [PMID: 27159018 DOI: 10.1038/nmat4641] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 04/07/2016] [Indexed: 05/07/2023]
Abstract
Measuring how the magnetic correlations evolve in doped Mott insulators has greatly improved our understanding of the pseudogap, non-Fermi liquids and high-temperature superconductivity. Recently, photo-excitation has been used to induce similarly exotic states transiently. However, the lack of available probes of magnetic correlations in the time domain hinders our understanding of these photo-induced states and how they could be controlled. Here, we implement magnetic resonant inelastic X-ray scattering at a free-electron laser to directly determine the magnetic dynamics after photo-doping the Mott insulator Sr2IrO4. We find that the non-equilibrium state, 2 ps after the excitation, exhibits strongly suppressed long-range magnetic order, but hosts photo-carriers that induce strong, non-thermal magnetic correlations. These two-dimensional (2D) in-plane Néel correlations recover within a few picoseconds, whereas the three-dimensional (3D) long-range magnetic order restores on a fluence-dependent timescale of a few hundred picoseconds. The marked difference in these two timescales implies that the dimensionality of magnetic correlations is vital for our understanding of ultrafast magnetic dynamics.
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Affiliation(s)
- M P M Dean
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Y Cao
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - X Liu
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- Collaborative Innovation Center of Quantum Matter, Beijing, China
| | - S Wall
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
| | - D Zhu
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - R Mankowsky
- Max Planck Institute for the Structure and Dynamics of Matter, D-22761 Hamburg, Germany
- Center for Free Electron Laser Science, D-22761 Hamburg, Germany
| | - V Thampy
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - X M Chen
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J G Vale
- London Centre for Nanotechnology and Department of Physics and Astronomy, University College London, London WC1E 6BT, UK
| | - D Casa
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Jungho Kim
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - A H Said
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - P Juhas
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R Alonso-Mori
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - J M Glownia
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - A Robert
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - J Robinson
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - M Sikorski
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - S Song
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - M Kozina
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - H Lemke
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - L Patthey
- SwissFEL, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - S Owada
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - T Katayama
- Japan Synchrotron Radiation Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | | | - T Togashi
- Japan Synchrotron Radiation Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - J Liu
- Department of Physics &Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - C Rayan Serrao
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA
| | - B J Kim
- Max Planck Institute for Solid State Research, D-70569 Stuttgart, Germany
| | - L Huber
- Institute for Quantum Electronics, ETH Zurich, CH-8093 Zurich, Switzerland
| | - C-L Chang
- Zernike Institute for Advanced Materials, University of Groningen, Groningen, NL 9747AG, The Netherlands
| | - D F McMorrow
- London Centre for Nanotechnology and Department of Physics and Astronomy, University College London, London WC1E 6BT, UK
| | - M Först
- Max Planck Institute for the Structure and Dynamics of Matter, D-22761 Hamburg, Germany
- Center for Free Electron Laser Science, D-22761 Hamburg, Germany
| | - J P Hill
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA
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12
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Nagaya K, Motomura K, Kukk E, Takahashi Y, Yamazaki K, Ohmura S, Fukuzawa H, Wada S, Mondal S, Tachibana T, Ito Y, Koga R, Sakai T, Matsunami K, Nakamura K, Kanno M, Rudenko A, Nicolas C, Liu XJ, Miron C, Zhang Y, Jiang Y, Chen J, Anand M, Kim DE, Tono K, Yabashi M, Yao M, Kono H, Ueda K. Femtosecond charge and molecular dynamics of I-containing organic molecules induced by intense X-ray free-electron laser pulses. Faraday Discuss 2016; 194:537-562. [DOI: 10.1039/c6fd00085a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We studied the electronic and nuclear dynamics of I-containing organic molecules induced by intense hard X-ray pulses at the XFEL facility SACLA in Japan. The interaction with the intense XFEL pulse causes absorption of multiple X-ray photons by the iodine atom, which results in the creation of many electronic vacancies (positive charges) via the sequential electronic relaxation in the iodine, followed by intramolecular charge redistribution. In a previous study we investigated the subsequent fragmentation by Coulomb explosion of the simplest I-substituted hydrocarbon, iodomethane (CH3I). We carried out three-dimensional momentum correlation measurements of the atomic ions created via Coulomb explosion of the molecule and found that a classical Coulomb explosion model including charge evolution (CCE-CE model), which accounts for the concerted dynamics of nuclear motion and charge creation/charge redistribution, reproduces well the observed momentum correlation maps of fragment ions emitted after XFEL irradiation. Then we extended the study to 5-iodouracil (C4H3IN2O2, 5-IU), which is a more complex molecule of biological relevance, and confirmed that, in both CH3I and 5-IU, the charge build-up takes about 10 fs, while the charge is redistributed among atoms within only a few fs. We also adopted a self-consistent charge density-functional based tight-binding (SCC-DFTB) method to treat the fragmentations of highly charged 5-IU ions created by XFEL pulses. Our SCC-DFTB modeling reproduces well the experimental and CCE-CE results. We have also investigated the influence of the nuclear dynamics on the charge redistribution (charge transfer) using nonadiabatic quantum-mechanical molecular dynamics (NAQMD) simulation. The time scale of the charge transfer from the iodine atomic site to the uracil ring induced by nuclear motion turned out to be only ∼5 fs, indicating that, besides the molecular Auger decay in which molecular orbitals delocalized over the iodine site and the uracil ring are involved, the nuclear dynamics also play a role for ultrafast charge redistribution. The present study illustrates that the CCE-CE model as well as the SCC-DFTB method can be used for reconstructing the positions of atoms in motion, in combination with the momentum correlation measurement of the atomic ions created via XFEL-induced Coulomb explosion of molecules.
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13
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Taguchi M, Chainani A, Ueda S, Matsunami M, Ishida Y, Eguchi R, Tsuda S, Takata Y, Yabashi M, Tamasaku K, Nishino Y, Ishikawa T, Daimon H, Todo S, Tanaka H, Oura M, Senba Y, Ohashi H, Shin S. Temperature Dependence of Magnetically Active Charge Excitations in Magnetite across the Verwey Transition. Phys Rev Lett 2015; 115:256405. [PMID: 26722935 DOI: 10.1103/physrevlett.115.256405] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Indexed: 05/12/2023]
Abstract
We study the electronic structure of bulk single crystals and epitaxial films of Fe_{3}O_{4}. Fe 2p core level spectra show clear differences between hard x-ray (HAX) and soft x-ray photoemission spectroscopy (PES). The bulk-sensitive spectra exhibit temperature (T) dependence across the Verwey transition, which is missing in the surface-sensitive spectra. By using an extended impurity Anderson full-multiplet model-and in contrast to an earlier peak assignment-we show that the two distinct Fe species (A and B site) and the charge modulation at the B site are responsible for the newly found double peaks in the main peak above T_{V} and its T-dependent evolution. The Fe 2p HAXPES spectra show a clear magnetic circular dichroism (MCD) in the metallic phase of magnetized 100-nm-thick films. The model calculations also reproduce the MCD and identify the contributions from magnetically distinct A and B sites. Valence band HAXPES shows a finite density of states at E_{F} for the polaronic half metal with a remnant order above T_{V} and a clear gap formation below T_{V}. The results indicate that the Verwey transition is driven by changes in the strongly correlated and magnetically active B-site electronic states, consistent with resistivity and optical spectra.
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Affiliation(s)
- M Taguchi
- Material Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - A Chainani
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - S Ueda
- National Institute for Materials Science (NIMS), SPring-8, Sayo, Hyogo 679-5148, Japan
| | - M Matsunami
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Ishida
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - R Eguchi
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - S Tsuda
- National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0003, Japan
| | - Y Takata
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - K Tamasaku
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - Y Nishino
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - T Ishikawa
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - H Daimon
- Material Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
| | - S Todo
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - H Tanaka
- ISIR-Sanken, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - M Oura
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - Y Senba
- JASRI/SPring-8, Sayo, Sayo, Hyogo 679-5198, Japan
| | - H Ohashi
- JASRI/SPring-8, Sayo, Sayo, Hyogo 679-5198, Japan
| | - S Shin
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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14
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Tanaka T, Kato M, Saito N, Tono K, Yabashi M, Ishikawa T. Room-temperature calorimeter for x-ray free-electron lasers. Rev Sci Instrum 2015; 86:093104. [PMID: 26429426 DOI: 10.1063/1.4929666] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have developed a room-temperature calorimeter for absolute radiant power measurements of x-ray free-electron lasers. This room-temperature calorimeter is an electrical substitution device based on the equivalence of electrical and radiant heating. Consequently, the measured radiant powers are traceable to electrical standards, i.e., the International System Units (SI). We demonstrated the performance of the room-temperature calorimeter by electrical power measurements (offline tests). In the offline tests, the room-temperature calorimeter was proven to be able to measure external powers up to at least 6.9 mW, which exceeds the upper limit (∼4 mW) of a cryogenic radiometer (the primary standard detector in Japan). In addition, measurement uncertainties of the room-temperature calorimeter were evaluated to be less than 1.0%, which is adequate for the radiant power measurements of x-ray free-electron lasers. An indirect comparison with the cryogenic radiometer was performed using a synchrotron radiation source to confirm the validity of the absolute radiant powers measured with the room-temperature calorimeter. The absolute radiant powers measured by the calorimeter agreed with those measured by the cryogenic radiometer within 0.6%, which is less than the relative standard uncertainty of the comparison (1.0%).
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Affiliation(s)
- T Tanaka
- National Institute of Advanced Industrial Science and Technology (AIST), NMIJ, Tsukuba 305-8568, Japan
| | - M Kato
- National Institute of Advanced Industrial Science and Technology (AIST), NMIJ, Tsukuba 305-8568, Japan
| | - N Saito
- National Institute of Advanced Industrial Science and Technology (AIST), NMIJ, Tsukuba 305-8568, Japan
| | - K Tono
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - M Yabashi
- RIKEN SPring-8 Centre, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - T Ishikawa
- RIKEN SPring-8 Centre, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
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15
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Ogi Y, Obara Y, Katayama T, Suzuki YI, Liu SY, Bartlett NCM, Kurahashi N, Karashima S, Togashi T, Inubushi Y, Ogawa K, Owada S, Rubešová M, Yabashi M, Misawa K, Slavíček P, Suzuki T. Ultraviolet photochemical reaction of [Fe(III)(C2O4)3](3-) in aqueous solutions studied by femtosecond time-resolved X-ray absorption spectroscopy using an X-ray free electron laser. Struct Dyn 2015; 2:034901. [PMID: 26798796 PMCID: PMC4711623 DOI: 10.1063/1.4918803] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 04/28/2015] [Accepted: 04/13/2015] [Indexed: 05/06/2023]
Abstract
Time-resolved X-ray absorption spectroscopy was performed for aqueous ammonium iron(III) oxalate trihydrate solutions using an X-ray free electron laser and a synchronized ultraviolet laser. The spectral and time resolutions of the experiment were 1.3 eV and 200 fs, respectively. A femtosecond 268 nm pulse was employed to excite [Fe(III)(C2O4)3](3-) in solution from the high-spin ground electronic state to ligand-to-metal charge transfer state(s), and the subsequent dynamics were studied by observing the time-evolution of the X-ray absorption spectrum near the Fe K-edge. Upon 268 nm photoexcitation, the Fe K-edge underwent a red-shift by more than 4 eV within 140 fs; however, the magnitude of the redshift subsequently diminished within 3 ps. The Fe K-edge of the photoproduct remained lower in energy than that of [Fe(III)(C2O4)3](3-). The observed red-shift of the Fe K-edge and the spectral feature of the product indicate that Fe(III) is upon excitation immediately photoreduced to Fe(II), followed by ligand dissociation from Fe(II). Based on a comparison of the X-ray absorption spectra with density functional theory calculations, we propose that the dissociation proceeds in two steps, forming first [(CO2 (•))Fe(II)(C2O4)2](3-) and subsequently [Fe(II)(C2O4)2](2-).
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Affiliation(s)
- Y Ogi
- Molecular Reaction Dynamics Research Team, RIKEN Center for Advanced Photonics , 2-1 Hirosawa, Wako 351-0198, Japan
| | | | - T Katayama
- Japan Synchrotron Radiation Research Institute , 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Y-I Suzuki
- Department of Chemistry, Graduate School of Science, Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - S Y Liu
- Molecular Reaction Dynamics Research Team, RIKEN Center for Advanced Photonics , 2-1 Hirosawa, Wako 351-0198, Japan
| | - N C-M Bartlett
- Molecular Reaction Dynamics Research Team, RIKEN Center for Advanced Photonics , 2-1 Hirosawa, Wako 351-0198, Japan
| | - N Kurahashi
- Department of Chemistry, Graduate School of Science, Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - S Karashima
- Department of Chemistry, Graduate School of Science, Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - T Togashi
- Japan Synchrotron Radiation Research Institute , 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Y Inubushi
- Japan Synchrotron Radiation Research Institute , 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - K Ogawa
- RIKEN SPring-8 Center , 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - S Owada
- RIKEN SPring-8 Center , 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - M Rubešová
- Department of Physical Chemistry, University of Chemistry and Technology , Technická 5, Prague 6 16628, Czech Republic
| | - M Yabashi
- RIKEN SPring-8 Center , 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | | | - P Slavíček
- Department of Physical Chemistry, University of Chemistry and Technology , Technická 5, Prague 6 16628, Czech Republic
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16
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Juranić PN, Stepanov A, Ischebeck R, Schlott V, Pradervand C, Patthey L, Radović M, Gorgisyan I, Rivkin L, Hauri CP, Monoszlai B, Ivanov R, Peier P, Liu J, Togashi T, Owada S, Ogawa K, Katayama T, Yabashi M, Abela R. High-precision x-ray FEL pulse arrival time measurements at SACLA by a THz streak camera with Xe clusters. Opt Express 2014; 22:30004-12. [PMID: 25606930 DOI: 10.1364/oe.22.030004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The accurate measurement of the arrival time of a hard X-ray free electron laser (FEL) pulse with respect to a laser is of utmost importance for pump-probe experiments proposed or carried out at FEL facilities around the world. This manuscript presents the latest device to meet this challenge, a THz streak camera using Xe gas clusters, capable of pulse arrival time measurements with an estimated accuracy of several femtoseconds. An experiment performed at SACLA demonstrates the performance of the device at photon energies between 5 and 10 keV with variable photon beam parameters.
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17
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Shwartz S, Fuchs M, Hastings JB, Inubushi Y, Ishikawa T, Katayama T, Reis DA, Sato T, Tono K, Yabashi M, Yudovich S, Harris SE. X-ray second harmonic generation. Phys Rev Lett 2014; 112:163901. [PMID: 24815649 DOI: 10.1103/physrevlett.112.163901] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Indexed: 05/27/2023]
Abstract
We report clear experimental evidence for second harmonic generation at hard x-ray wavelengths. Using a 1.7 Å pumping beam generated by a free electron laser, we observe second harmonic generation in diamond. The generated second harmonic is of order 10 times the background radiation, scales quadratically with pump pulse energy, and is generated over a narrow phase-matching condition. Of importance for future experiments, our results indicate that it is possible to observe nonlinear x-ray processes in crystals at pump intensities exceeding 1016 W/cm2.
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Affiliation(s)
- S Shwartz
- Physics Department and Institute of Nanotechnology, Bar Ilan University, Ramat Gan 52900, Israel and Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
| | - M Fuchs
- PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA and Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
| | - J B Hastings
- The Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Y Inubushi
- RIKEN SPring-8 Center, Kouto 1-1-1 Sayo, Hyogo 679-5148, Japan
| | - T Ishikawa
- RIKEN SPring-8 Center, Kouto 1-1-1 Sayo, Hyogo 679-5148, Japan
| | - T Katayama
- Japan Synchrotron Radiation Research Institute, JASRI, Kouto 1-1-1 Sayo, Hyogo 679-5148, Japan
| | - D A Reis
- PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA and Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - T Sato
- RIKEN SPring-8 Center, Kouto 1-1-1 Sayo, Hyogo 679-5148, Japan
| | - K Tono
- Japan Synchrotron Radiation Research Institute, JASRI, Kouto 1-1-1 Sayo, Hyogo 679-5148, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, Kouto 1-1-1 Sayo, Hyogo 679-5148, Japan
| | - S Yudovich
- Physics Department and Institute of Nanotechnology, Bar Ilan University, Ramat Gan 52900, Israel
| | - S E Harris
- Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
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18
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Togashi T, Takahashi E, Midorikawa K, Aoyama M, Yamakawa K, Sato T, Iwasaki A, Owada S, Yamanouchi K, Hara T, Matsubara S, Ohshima T, Otake Y, Tamasaku K, Tanaka H, Tanaka T, Tomizawa H, Watanabe T, Yabashi M, Ishikawa T. Extreme ultraviolet free electron laser seeded by high-order harmonic. Radiat Phys Chem Oxf Engl 1993 2013. [DOI: 10.1016/j.radphyschem.2013.06.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Matsuyama S, Emi Y, Kohmura Y, Tamasaku K, Yabashi M, Ishikawa T, Yamauchi K. Development of achromatic full-field hard X-ray microscopy using four total-reflection mirrors. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/463/1/012017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Shirai T, Imada S, Higashiya A, Sekiyama A, Suga S, Muro T, Tanaka Y, Tamasaku K, Yabashi M, Ishikawa T, Miyasaka S, Tokura Y. Ce electronic states in Nd(0.45-x)Ce(x)Sr0.55MnO3 probed by x-ray absorption spectroscopy and photoemission. J Phys Condens Matter 2013; 25:415601. [PMID: 24047823 DOI: 10.1088/0953-8984/25/41/415601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We have investigated the Ce 4f electronic states in the Ce-doped manganites Nd(0.45-x)Ce(x)Sr0.55MnO3 (NCSMO) by means of x-ray absorption spectroscopy (XAS) and hard x-ray photoelectron spectroscopy (HAXPES). The Ce 3d XAS shows that the Ce ions exist in the form of the Ce(3+) and Ce(4+) mixed-valent states, and we have found that the XAS spectral features change with temperature. The Ce 3d XAS and HAXPES spectra for NCSMO agree reasonably well with calculated results based on the single-impurity Anderson model, which takes into account the atomic multiplets and two valence bands. The estimated Ce bulk valence of Nd0.15Ce0.3Sr0.55MnO3 decreases from 3.44 to 3.30 with cooling.
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Affiliation(s)
- T Shirai
- Department of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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21
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Fukuzawa H, Son SK, Motomura K, Mondal S, Nagaya K, Wada S, Liu XJ, Feifel R, Tachibana T, Ito Y, Kimura M, Sakai T, Matsunami K, Hayashita H, Kajikawa J, Johnsson P, Siano M, Kukk E, Rudek B, Erk B, Foucar L, Robert E, Miron C, Tono K, Inubushi Y, Hatsui T, Yabashi M, Yao M, Santra R, Ueda K. Deep inner-shell multiphoton ionization by intense x-ray free-electron laser pulses. Phys Rev Lett 2013; 110:173005. [PMID: 23679721 DOI: 10.1103/physrevlett.110.173005] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2012] [Revised: 02/04/2013] [Indexed: 05/11/2023]
Abstract
We have investigated multiphoton multiple ionization dynamics of xenon atoms using a new x-ray free-electron laser facility, SPring-8 Angstrom Compact free electron LAser (SACLA) in Japan, and identified that Xe(n+) with n up to 26 is produced at a photon energy of 5.5 keV. The observed high charge states (n≥24) are produced via five-photon absorption, evidencing the occurrence of multiphoton absorption involving deep inner shells. A newly developed theoretical model, which shows good agreement with the experiment, elucidates the complex pathways of sequential electronic decay cascades accessible in heavy atoms. The present study of heavy-atom ionization dynamics in high-intensity hard-x-ray pulses makes a step forward towards molecular structure determination with x-ray free-electron lasers.
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Affiliation(s)
- H Fukuzawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
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22
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Iwasaki A, Sato T, Owada S, Togashi T, Takahashi E, Midorikawa K, Aoyama M, Yamakawa K, Matsubara S, Okayasu Y, Tomizawa H, Watanabe T, Nagasono M, Yabashi M, Ishikawa T, Yamanouchi K. Synchronization of FEL and high-order harmonics of ultrashort-pulsed laser for generating intense full-coherent EUV light pulses. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20134101018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Hishikawa A, Fushitani M, Hikosaka Y, Matsuda A, Liu CN, Morishita T, Shigemasa E, Nagasono M, Tono K, Togashi T, Ohashi H, Kimura H, Senba Y, Yabashi M, Ishikawa T. Enhanced nonlinear double excitation of He in intense extreme ultraviolet laser fields. Phys Rev Lett 2011; 107:243003. [PMID: 22242995 DOI: 10.1103/physrevlett.107.243003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Indexed: 05/31/2023]
Abstract
Nonlinear, three-photon double excitation of He in intense extreme ultraviolet free-electron laser fields (∼24.1 eV, ∼5 TW/cm2) is presented. Resonances to the doubly excited states converging to the He+ N=3 level are revealed by the shot-by-shot photoelectron spectroscopy and identified by theoretical calculations based on the time-dependent Schrödinger equation for the two-electron atom under a laser field. It is shown that the three-photon double excitation is enhanced by intermediate Rydberg states below the first ionization threshold, giving a greater contribution to the photoionization yields than the two-photon process by more than 1 order of magnitude.
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Affiliation(s)
- A Hishikawa
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan.
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24
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Moshammer R, Pfeifer T, Rudenko A, Jiang YH, Foucar L, Kurka M, Kühnel KU, Schröter CD, Ullrich J, Herrwerth O, Kling MF, Liu XJ, Motomura K, Fukuzawa H, Yamada A, Ueda K, Ishikawa KL, Nagaya K, Iwayama H, Sugishima A, Mizoguchi Y, Yase S, Yao M, Saito N, Belkacem A, Nagasono M, Higashiya A, Yabashi M, Ishikawa T, Ohashi H, Kimura H, Togashi T. Second-order autocorrelation of XUV FEL pulses via time resolved two-photon single ionization of He. Opt Express 2011; 19:21698-21706. [PMID: 22109020 DOI: 10.1364/oe.19.021698] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Second-order autocorrelation spectra of XUV free-electron laser pulses from the Spring-8 Compact SASE Source (SCSS) have been recorded by time and momentum resolved detection of two-photon single ionization of He at 20.45 eV using a split-mirror delay-stage in combination with high-resolution recoil-ion momentum spectroscopy (COLTRIMS). From the autocorrelation trace we extract a coherence time of 8 ± 2 fs and a mean pulse duration of 28 ± 5 fs, much shorter than estimations based on electron bunch-length measurements. Simulations within the partial coherence model [Opt. Lett. 35, 3441 (2010)] are in agreement with experiment if a pulse-front tilt across the FEL beam diameter is taken into account that leads to a temporal shift of about 6 fs between both pulse replicas.
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Affiliation(s)
- R Moshammer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
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25
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Bachelard R, Mercère P, Idir M, Couprie ME, Labat M, Chubar O, Lambert G, Zeitoun P, Kimura H, Ohashi H, Higashiya A, Yabashi M, Nagasono M, Hara T, Ishikawa T. Wavefront analysis of nonlinear self-amplified spontaneous-emission free-electron laser harmonics in the single-shot regime. Phys Rev Lett 2011; 106:234801. [PMID: 21770510 DOI: 10.1103/physrevlett.106.234801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2010] [Indexed: 05/31/2023]
Abstract
The single-shot spatial characteristics of the vacuum ultraviolet self-amplified spontaneous emission of a free electron laser (FEL) is measured at different stages of amplification up to saturation with a Hartmann wavefront sensor. We show that the fundamental radiation at 61.5 nm tends towards a single-mode behavior as getting closer to saturation. The measurements are found in good agreement with simulations and theory. A near diffraction limited wavefront was measured. The analysis of Fresnel diffraction through the Hartmann wavefront sensor hole array also provides some further insight for the evaluation of the FEL transverse coherence, of high importance for various applications.
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Affiliation(s)
- R Bachelard
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, France
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26
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Ohtsuki T, Chainani A, Eguchi R, Matsunami M, Takata Y, Taguchi M, Nishino Y, Tamasaku K, Yabashi M, Ishikawa T, Oura M, Senba Y, Ohashi H, Shin S. Role of Ti 3d carriers in mediating the ferromagnetism of Co∶TiO2 anatase thin films. Phys Rev Lett 2011; 106:047602. [PMID: 21405362 DOI: 10.1103/physrevlett.106.047602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Revised: 12/28/2010] [Indexed: 05/30/2023]
Abstract
We study the surface and bulk electronic structure of the room-temperature ferromagnet Co∶TiO(2) anatase films using soft- and hard-x-ray photoemission spectroscopy with probe sensitivities of ∼1 and ∼10 nm, respectively. We obtain direct evidence of metallic Ti(3+) states in the bulk, which get suppressed to give a surface semiconductor, thus indicating the difference in electronic structure between surface and bulk. X-ray absorption and resonant photoemission spectroscopy reveal Ti(3+) electrons at the Fermi level (E(F)) and high-spin Co(2+) electrons occurring away from E(F). The results show the importance of the charge neutrality condition: Co(2+)+V(O)(2-)+2Ti(4+)↔Co(2+)+2Ti(3+) (V(O) is oxygen vacancy), which gives rise to the elusive Ti 3d carriers mediating ferromagnetism via the Co 3d-O 2p-Ti 3d exchange interaction pathway of the occupied orbitals.
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Affiliation(s)
- T Ohtsuki
- RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan
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27
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Matsuyama S, Wakioka T, Kidani N, Kimura T, Mimura H, Sano Y, Nishino Y, Yabashi M, Tamasaku K, Ishikawa T, Yamauchi K. One-dimensional Wolter optics with a sub-50 nm spatial resolution. Opt Lett 2010; 35:3583-3585. [PMID: 21042357 DOI: 10.1364/ol.35.003583] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We studied an imaging system consisting of an elliptical mirror and a hyperbolic mirror [i.e., one-dimensional (1D) Wolter optics] to realize an achromatic full-field hard x-ray microscopy with a resolution better than 50 nm. We report the performance of this 1D Wolter optical system when the mirrors were ultraprecisely figured by elastic emission machining. Experiments to form a demagnified image (demagnification factor of 385) of a 10 μm slit were conducted at an x-ray energy of 11.5 keV at BL29XUL of SPring-8. The system could form a demagnified image with a resolution better than 50 nm over a 12.1 μm field.
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Affiliation(s)
- S Matsuyama
- Department of Precision Science and Technology, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan.
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28
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Hikosaka Y, Fushitani M, Matsuda A, Tseng CM, Hishikawa A, Shigemasa E, Nagasono M, Tono K, Togashi T, Ohashi H, Kimura H, Senba Y, Yabashi M, Ishikawa T. Multiphoton double ionization of Ar in intense extreme ultraviolet laser fields studied by shot-by-shot photoelectron spectroscopy. Phys Rev Lett 2010; 105:133001. [PMID: 21230767 DOI: 10.1103/physrevlett.105.133001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Indexed: 05/30/2023]
Abstract
Photoelectron spectroscopy has been performed to study the multiphoton double ionization of Ar in an intense extreme ultraviolet laser field (hν ∼ 21 eV, ∼ 5 TW/cm²), by using a free electron laser (FEL). Three distinct peaks identified in the observed photoelectron spectra clearly show that the double ionization proceeds sequentially via the formation of Ar(+): Ar+hν→Ar (+) + e⁻ and Ar²(+) + 2hν→Ar(+) + e⁻. Shot-by-shot recording of the photoelectron spectra allows simultaneous monitoring of FEL spectrum and the multiphoton process for each FEL pulse, revealing that the two-photon ionization from Ar(+) is significantly enhanced by intermediate resonances in Ar(+).
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Affiliation(s)
- Y Hikosaka
- Department of Environmental Science, Niigata University, Niigata 950-2181, Japan.
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29
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Okawa M, Matsunami M, Ishizaka K, Eguchi R, Taguchi M, Chainani A, Takata Y, Yabashi M, Tamasaku K, Nishino Y, Ishikawa T, Kuga K, Horie N, Nakatsuji S, Shin S. Strong valence fluctuation in the quantum critical heavy fermion superconductor β-YbAlB4: a hard x-ray photoemission study. Phys Rev Lett 2010; 104:247201. [PMID: 20867330 DOI: 10.1103/physrevlett.104.247201] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2009] [Indexed: 05/29/2023]
Abstract
Electronic structures of the quantum critical superconductor β-YbAlB4 and its polymorph α-YbAlB4 are investigated by using bulk-sensitive hard x-ray photoemission spectroscopy. From the Yb 3d core level spectra, the values of the Yb valence are estimated to be ∼2.73 and ∼2.75 for α- and β-YbAlB4, respectively, thus providing clear evidence for valence fluctuations. The valence band spectra of these compounds also show Yb2+ peaks at the Fermi level. These observations establish an unambiguous case of a strong mixed valence at quantum criticality for the first time among heavy fermion systems, calling for a novel scheme for a quantum critical model beyond the conventional Doniach picture in β-YbAlB4.
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Affiliation(s)
- M Okawa
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan.
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30
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Bhobe PA, Chainani A, Taguchi M, Takeuchi T, Eguchi R, Matsunami M, Ishizaka K, Takata Y, Oura M, Senba Y, Ohashi H, Nishino Y, Yabashi M, Tamasaku K, Ishikawa T, Takenaka K, Takagi H, Shin S. Evidence for a correlated insulator to antiferromagnetic metal transition in CrN. Phys Rev Lett 2010; 104:236404. [PMID: 20867257 DOI: 10.1103/physrevlett.104.236404] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Indexed: 05/29/2023]
Abstract
We investigate the electronic structure of chromium nitride (CrN) across the first-order magnetostructural transition at T(N)∼286 K. Resonant photoemission spectroscopy (PES) shows a gap in the 3d partial density of states at the Fermi level and an on-site Coulomb energy U∼4.5 eV, indicating strong electron-electron correlations. Bulk-sensitive high-resolution (6 meV) laser PES reveals a clear Fermi edge indicating an antiferromagnetic metal below T(N). Hard x-ray Cr 2p core-level PES shows T-dependent changes across T(N) which originate from screening due to coherent states as substantiated by cluster model calculations using the experimentally observed U. Electrical resistivity confirms an insulator above T(N) (E(g)∼70 meV) becoming a disordered metal below T(N). Thus, CrN transforms from a correlated insulator to an antiferromagnetic metal, coupled to the magnetostructural transition.
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Affiliation(s)
- P A Bhobe
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan.
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31
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Yamada A, Fukuzawa H, Motomura K, Liu XJ, Foucar L, Kurka M, Okunishi M, Ueda K, Saito N, Iwayama H, Nagaya K, Sugishima A, Murakami H, Yao M, Rudenko A, Kühnel KU, Ullrich J, Feifel R, Czasch A, Dörner R, Nagasono M, Higashiya A, Yabashi M, Ishikawa T, Ohashi H, Kimura H, Togashi T. Ion-ion coincidence studies on multiple ionizations of N2 and O2 molecules irradiated by extreme ultraviolet free-electron laser pulses. J Chem Phys 2010; 132:204305. [DOI: 10.1063/1.3436722] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Chang YY, Chen SY, Wu HH, Weng SC, Chu CH, Lee YR, Tang MT, Stetsko Y, Shew BY, Yabashi M, Chang SL. Diffraction-enhanced beam-focusing for X-rays in curved multi-plate crystal cavity. Opt Express 2010; 18:7886-7892. [PMID: 20588629 DOI: 10.1364/oe.18.007886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Unusual x-ray focusing effect is reported for parabolic curved multi-plate x-ray crystal cavities of silicon consisting of compound refractive lenses (CRL). The transmitted beam of the (12 4 0) back reflection near 14.4388 keV from these monolithic silicon crystal devices exhibits extraordinary focusing enhancement, such that the focal length is reduced by as much as 18% for 2-beam and 56% for 24-beam diffraction from the curved crystal cavity. This effect is attributed to the presence of the involved Bragg diffractions, in which the wavevector of the transmitted beam is bent further when traversing several curved crystal surfaces.
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Affiliation(s)
- Y-Y Chang
- Department of Physics, National Tsing Hua University, Hsinchu, ROC 300 Taiwan
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33
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Taguchi M, Chainani A, Matsunami M, Eguchi R, Takata Y, Yabashi M, Tamasaku K, Nishino Y, Ishikawa T, Tsuda S, Watanabe S, Chen CT, Senba Y, Ohashi H, Fujiwara K, Nakamura Y, Takagi H, Shin S. Anomalous state sandwiched between Fermi liquid and charge ordered Mott-insulating phases of Ti4O7. Phys Rev Lett 2010; 104:106401. [PMID: 20366439 DOI: 10.1103/physrevlett.104.106401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2009] [Indexed: 05/29/2023]
Abstract
The Magnéli phase Ti(4)O(7) exhibits two sharp jumps in resistivity with coupled structural transitions as a function of temperature at T(c1) approximately 142 K and T(c2) = 154 K. We have studied electronic structure changes across the two transitions using 7 eV laser, soft x-ray, and hard x-ray (HX) photoemission spectroscopy (PES). Ti 2p-3d resonant PES and HX PES show a clear metallic Fermi edge and mixed valency above T(c2). The low temperature phase below T(c1) shows a clear insulating gap of approximately 100 meV. The intermediate phase between T(c1) and T(c2) indicates a pseudogap coexisting with remnant coherent states. HX PES and complementary calculations have confirmed the coherent screening in the strongly correlated intermediate phase. The results suggest the existence of a highly anomalous state sandwiched between the mixed-valent Fermi liquid and charge ordered Mott-insulating phase in Ti(4)O(7).
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Affiliation(s)
- M Taguchi
- Soft X-ray Spectroscopy Lab, RIKEN SPring-8 Center, Sayo, Sayo, Hyogo 679-5148, Japan
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34
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Inubushi Y, Yoneda H, Higashiya A, Ishikawa T, Kimura H, Kumagai T, Morimoto S, Nagasono M, Ohashi H, Sato F, Tanaka T, Togashi T, Tono K, Yabashi M, Yamaguchi Y, Kodama R. Note: Measurement of saturable absorption by intense vacuum ultraviolet free electron laser using fluorescent material. Rev Sci Instrum 2010; 81:036101. [PMID: 20370224 DOI: 10.1063/1.3302542] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Advances in free electron lasers (FELs) which generate high energy photons are expected to open novel nonlinear optics in the x-ray and vacuum ultraviolet (VUV) regions. In this paper, we report a new method for performing VUV-FEL focusing experiments. A VUV-FEL was focused with Kirkpatrick-Baez optics on a multilayer target, which contains fused silica as a fluorescent material. By measuring the fluorescence, a 5.6x4.9 microm(2) focal spot was observed in situ. Fluorescence was used to measure the saturable absorption of VUV pulses in the tin layer. The transmission increases nonlinearly higher with increasing laser intensity.
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Affiliation(s)
- Y Inubushi
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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35
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Takizawa M, Hotta Y, Susaki T, Ishida Y, Wadati H, Takata Y, Horiba K, Matsunami M, Shin S, Yabashi M, Tamasaku K, Nishino Y, Ishikawa T, Fujimori A, Hwang HY. Spectroscopic evidence for competing reconstructions in polar multilayers LaAlO3/LaVO3/LaAlO3. Phys Rev Lett 2009; 102:236401. [PMID: 19658952 DOI: 10.1103/physrevlett.102.236401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2008] [Indexed: 05/28/2023]
Abstract
We have studied the valence redistribution of V in LaAlO(3)/LaVO(3)/LaAlO(3) trilayers, which are composed of only polar layers grown on SrTiO3 (001) substrates, by core-level photoemission spectroscopy. We have found that the V valence is intermediate between V3+ and V4+ for thin LaAlO3 cap layers, decreases with increasing cap-layer thickness, and finally recovers the bulk value of V3+ at approximately 10 unit-cell thickness. In order to interpret these results, we propose that the atomic reconstruction of the polar LaAlO3 surface competes with the purely electronic V valence change so that the polar catastrophe is avoided at the cost of minimum energy.
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Affiliation(s)
- M Takizawa
- Department of Physics, University of Tokyo, 3-7-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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36
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Liu XJ, Fukuzawa H, Prümper G, Okunishi M, Shimada K, Ueda K, Motomura K, Saito N, Iwayama H, Nagaya K, Yao M, Rudenko A, Ullrich J, Foucar L, Czasch A, Schmidt-Böcking H, Dörner R, Nagasono M, Higashiya A, Yabashi M, Ishikawa T, Ohashi H, Kimura H. Cold-target recoil-ion momentum spectroscopy for diagnostics of high harmonics of the extreme-ultraviolet free-electron laser light source at SPring-8. Rev Sci Instrum 2009; 80:053105. [PMID: 19485490 DOI: 10.1063/1.3126422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We have developed a cold-target recoil-ion momentum spectroscopy apparatus dedicated to the experiments using the extreme-ultraviolet light pulses at the free-electron laser facility, SPring-8 Compact SASE Source test accelerator, in Japan and used it to measure spatial distributions of fundamental, second, and third harmonics at the end station.
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Affiliation(s)
- X-J Liu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
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37
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Takata Y, Kayanuma Y, Oshima S, Tanaka S, Yabashi M, Tamasaku K, Nishino Y, Matsunami M, Eguchi R, Chainani A, Oura M, Takeuchi T, Senba Y, Ohashi H, Shin S, Ishikawa T. Recoil effect of photoelectrons in the Fermi edge of simple metals. Phys Rev Lett 2008; 101:137601. [PMID: 18851493 DOI: 10.1103/physrevlett.101.137601] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2008] [Indexed: 05/26/2023]
Abstract
High energy resolution photoelectron spectroscopy of conduction electrons in the vicinity of the Fermi edge in Al and Au at excitation energies of 880 and 7940 eV was carried out using synchrotron radiation. For the excitation energy of 7940 eV, the observed Fermi energy of Al shows a remarkable shift to higher binding energy as compared with that of Au, with accompanying broadening. This is due to the recoil effect of the emitted photoelectrons. The observed spectra are well reproduced by a simple model of Bloch electrons based on the isotropic Debye model.
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Affiliation(s)
- Y Takata
- RIKEN SPring-8 Center, Hyogo 679-5148, Japan.
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38
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Chen SY, Chang YY, Tang MT, Stetsko Y, Yabashi M, Wu HH, Lee YR, Shew BY, Chang SL. Beam suppression and focusing in multi-plate crystal cavity with compound refractive lenses. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308081476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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39
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Taguchi M, Matsunami M, Ishida Y, Eguchi R, Chainani A, Takata Y, Yabashi M, Tamasaku K, Nishino Y, Ishikawa T, Senba Y, Ohashi H, Shin S. Revisiting the valence-band and core-level photoemission spectra of NiO. Phys Rev Lett 2008; 100:206401. [PMID: 18518558 DOI: 10.1103/physrevlett.100.206401] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2007] [Indexed: 05/26/2023]
Abstract
We have reexamined the valence-band (VB) and core-level electronic structure of NiO by means of hard and soft x-ray photoemission spectroscopies. The spectral weight of the lowest energy state was found to be enhanced in the bulk sensitive Ni 2p core-level spectrum. A configuration-interaction model including a bound state screening has shown agreement with the core-level spectrum and off- and on-resonance VB spectra. These results identify the lowest energy states in the core-level and VB spectra as the Zhang-Rice (ZR) doublet bound states, consistent with the spin-fermion model and recent ab initio calculations within dynamical mean-field theory. The results indicate that the ZR character first ionization (the lowest hole-addition) states are responsible for transport properties in NiO and doped NiO.
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Affiliation(s)
- M Taguchi
- Soft X-ray Spectroscopy Lab, RIKEN SPring-8 Center, Sayo, Sayo, Hyogo 679-5148, Japan
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40
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Matsuyama S, Mimura H, Katagishi K, Yumoto H, Handa S, Fujii M, Sano Y, Shimura M, Yabashi M, Nishino Y, Tamasaku K, Ishikawa T, Yamauchi K. Trace element mapping using a high-resolution scanning X-ray fluorescence microscope equipped with a Kirkpatrick-Baez mirror system. SURF INTERFACE ANAL 2008. [DOI: 10.1002/sia.2844] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Yamasaki A, Imada S, Higashimichi H, Fujiwara H, Saita T, Miyamachi T, Sekiyama A, Sugawara H, Kikuchi D, Sato H, Higashiya A, Yabashi M, Tamasaku K, Miwa D, Ishikawa T, Suga S. Coexistence of strongly mixed-valence and heavy-fermion character in SmOs4Sb12 studied by soft- and hard-X-ray spectroscopy. Phys Rev Lett 2007; 98:156402. [PMID: 17501367 DOI: 10.1103/physrevlett.98.156402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2006] [Indexed: 05/15/2023]
Abstract
Sm-based heavy-fermion compound SmOs4Sb12 has been investigated by soft x-ray (hnu=1070-1600 eV) and hard x-ray (HX; hnu=7932 eV) spectroscopy. The HX photoemission spectroscopy clearly demonstrates that the strongly mixed-valence state and the heavy-fermion state coexist in the bulk. It is found that the Sm valence decreases below 100 K, indicating that the Kondo coherence develops with approaching the proposed Kondo temperature. Our theoretical analyses suggest that the origin of the coexistence in SmOs4Sb12 is the coincidence of two conditions, namely, (i) the energy difference between Sm divalent and trivalent states is very small and (ii) the hybridization between Sm 4f and conduction electrons is weak.
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Affiliation(s)
- A Yamasaki
- Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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42
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Yabashi M, Goto S, Shimizu Y, Tamasaku K, Yamazaki H, Yoda Y, Suzuki M, Ohishi Y, Yamamoto M, Ishikawa T. Diamond Double-Crystal Monochromator for SPring-8 Undulator Beamlines. ACTA ACUST UNITED AC 2007. [DOI: 10.1063/1.2436212] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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43
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Taguchi Y, Yamamoto K, Mimura K, Ichikawa K, Kitamoto K, Aita O, Ishibashi H, Takata Y, Horiba K, Shin S, Yabashi M, Tamasaku K, Nishino Y, Miwa D, Ishikawa T, Ikenaga E, Kobayashi K. Ir 4f hard X-ray photoemission spectrum of CuIr2S4. Radiat Phys Chem Oxf Engl 1993 2006. [DOI: 10.1016/j.radphyschem.2005.07.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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44
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Taguchi M, Chainani A, Horiba K, Takata Y, Yabashi M, Tamasaku K, Nishino Y, Miwa D, Ishikawa T, Takeuchi T, Yamamoto K, Matsunami M, Shin S, Yokoya T, Ikenaga E, Kobayashi K, Mochiku T, Hirata K, Hori J, Ishii K, Nakamura F, Suzuki T. Evidence for suppressed screening on the surface of high temperature La(2-x)SrxCuO4 and Nd2(2-x)CexCuO4 superconductors. Phys Rev Lett 2005; 95:177002. [PMID: 16383858 DOI: 10.1103/physrevlett.95.177002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2005] [Indexed: 05/05/2023]
Abstract
Hard x-ray photoemission spectroscopy (PES) of Cu core electronic states, with a probing depth of approximately 60 A, is used to show that the Zhang-Rice singlet feature is present in La2CuO4 but is absent in Nd2CuO4. Hole and electron doping in La(2-x)SrxCuO4 (LSCO) and Nd(2-x)CexCuO4 (NCCO) result in new well-screened features which are missing in soft x-ray PES. Impurity Anderson model calculations establish screening from doped states as its origin, which is strongly suppressed within 15 A of the surface. Complemented with x-ray absorption spectroscopy, the small chemical-potential shift in core levels (approximately 0.2 eV) are shown to be consistent with modifications of valence and conduction band states spanning the band gap (approximately 1 eV) upon hole and electron doping in LSCO and NCCO.
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Affiliation(s)
- M Taguchi
- Soft X-ray Spectroscopy Laboratory, RIKEN/SPring-8, Mikazuki, Hyogo 679-5148, Japan
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45
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Chang SL, Stetsko YP, Tang MT, Lee YR, Sun WH, Wu HH, Yabashi M, Ishikawa T. Direct observation of resonance fringes in X-ray cavity: a diffraction experiment. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305081869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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46
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Yabashi M, Tamasaku K, Tanaka Y, Hara T, Tanaka T, Goto S, Shintake T, Kitamura H, Ishikawa T. Roles of X-ray optics in the next generation X-ray source. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305099150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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47
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Chang SL, Stetsko YP, Tang MT, Lee YR, Sun WH, Yabashi M, Ishikawa T. X-ray resonance in crystal cavities: realization of Fabry-Perot resonator for hard x rays. Phys Rev Lett 2005; 94:174801. [PMID: 15904302 DOI: 10.1103/physrevlett.94.174801] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2004] [Indexed: 05/02/2023]
Abstract
X-ray back diffraction from monolithic two silicon crystal plates of 25-150 microm thickness and a 40-150 microm gap using synchrotron radiation of energy resolution DeltaE = 0.36 meV at 14.4388 keV clearly show resonance fringes inside the energy gap and the total-reflection range for the (12 4 0) reflection. This cavity resonance results from the coherent interaction between the x-ray wave fields generated by the two plates with a gap smaller than the x-ray coherence length. This finding opens up new opportunities for high-resolution and phase-contrast x-ray studies, and may lead to new developments in x-ray optics.
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Affiliation(s)
- S-L Chang
- Department of Physics, National Tsing Hua University (NTHU), Hsinchu, Taiwan 300, Republic of China.
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48
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Horiba K, Taguchi M, Chainani A, Takata Y, Ikenaga E, Miwa D, Nishino Y, Tamasaku K, Awaji M, Takeuchi A, Yabashi M, Namatame H, Taniguchi M, Kumigashira H, Oshima M, Lippmaa M, Kawasaki M, Koinuma H, Kobayashi K, Ishikawa T, Shin S. Nature of the well screened state in hard X-ray Mn 2p core-level photoemission measurements of La1-xSrxMnO3 films. Phys Rev Lett 2004; 93:236401. [PMID: 15601180 DOI: 10.1103/physrevlett.93.236401] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2004] [Indexed: 05/24/2023]
Abstract
Using hard x-ray (HX; hnu=5.95 keV) synchrotron photoemission spectroscopy (PES), we study the intrinsic electronic structure of La(1-x)Sr(x)MnO(3) (LSMO) thin films. Comparison of Mn 2p core-levels with soft x-ray (SX; hnu approximately 1000 eV) PES shows a clear additional well-screened feature only in HX PES. Takeoff-angle dependent data indicate its bulk (> or =20 A) character. The doping and temperature dependence track the ferromagnetism and metallicity of the LSMO series. Cluster model calculations including charge transfer from doping-induced states show good agreement, confirming this picture of bulk properties reflected in Mn 2p core-levels using HX PES.
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Affiliation(s)
- K Horiba
- Soft X-Ray Spectroscopy Laboratory, RIKEN/SPring-8, Mikazuki-cho, Hyogo 679-5148, Japan.
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49
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Ishikawa T, Yabashi M, Tamasaku K, Yamazaki H. Coherence and the ultimate in energy resolution. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302093479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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50
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Souvorov A, Yabashi M, Tamasaku K, Ishikawa T, Mori Y, Yamauchi K, Yamamura K, Saito A. Deterministic retrieval of surface waviness by means of topography with coherent X-rays. J Synchrotron Radiat 2002; 9:223-228. [PMID: 12091730 DOI: 10.1107/s0909049502008804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2001] [Accepted: 05/15/2002] [Indexed: 05/23/2023]
Abstract
A surface profile retrieval technique from multiple X-ray total reflection images taken at various distances with full coherent illumination is demonstrated. An experiment was performed using the 1 km-long BL29XU beamline at the SPring-8 facility, Japan. Obtained results are compared with results from the optical metrology technique (Fizeau's interferometer). Good agreement between X-ray and optical methods proves the validity of the current approach. Meanwhile, the sensitivity of the X-ray technique is several times higher than that of the standard one. This technique is well suited to the needs of characterizing grazing optics for new-generation X-ray sources.
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Affiliation(s)
- A Souvorov
- SPring-8/JASRI, Kouto 1-1-1, Mikazuki, Hyogo 679-5148, Japan.
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