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Bredillet K, Riporto F, Guo T, Dhouib A, Multian V, Monnier V, Figueras Llussà P, Beauquis S, Bonacina L, Mugnier Y, Le Dantec R. Dual second harmonic generation and up-conversion photoluminescence emission in highly-optimized LiNbO 3 nanocrystals doped and co-doped with Er 3+ and Yb 3. Nanoscale 2024. [PMID: 38497193 DOI: 10.1039/d4nr00431k] [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] [Indexed: 03/19/2024]
Abstract
Preparation from the aqueous alkoxide route of doped and co-doped lithium niobate nanocrystals with Er3+ and Yb3+ ions, and detailed investigations of their optical properties are presented in this comprehensive work. Simultaneous emission under femtosecond laser excitation of second harmonic generation (SHG) and up-conversion photoluminescence (UC-PL) is studied from colloidal suspensions according to the lanthanide ion contents. Special attention has been paid to produce phase pure nanocrystals of constant size (∼20 nm) thus allowing a straightforward comparison and optimization of the Er content for increasing the green UC-PL signals under 800 nm excitation. An optimal molar concentration at about 4 molar% in erbium ions is demonstrated, that is well above the concentration usually achieved in bulk crystals. Similarly, for co-doped LiNbO3 nanocrystals, different lanthanide concentrations and Yb/Er content ratios are tested allowing optimization of the green and red up-conversion excited at 980 nm, and analysis of the underlying mechanisms from excitation spectra. All together, these findings provide valuable insights into the wet-chemical synthesis and potential of doped and co-doped LiNbO3 nanocrystals for advanced applications, combining both SHG and UC-PL emissions from the particle core.
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Affiliation(s)
- K Bredillet
- Université Savoie Mont Blanc, SYMME, F-74000, Annecy, France.
| | - F Riporto
- Université Savoie Mont Blanc, SYMME, F-74000, Annecy, France.
| | - T Guo
- Université Savoie Mont Blanc, SYMME, F-74000, Annecy, France.
| | - A Dhouib
- Université Savoie Mont Blanc, SYMME, F-74000, Annecy, France.
| | - V Multian
- Université Savoie Mont Blanc, SYMME, F-74000, Annecy, France.
| | - V Monnier
- Univ. Lyon, Ecole Centrale de Lyon, CNRS, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, INL, UMR5270, 69130 Ecully, France
| | - P Figueras Llussà
- Department of Applied Physics, Université de Genève, 1211 Genève 4, Switzerland
| | - S Beauquis
- Université Savoie Mont Blanc, SYMME, F-74000, Annecy, France.
| | - L Bonacina
- Department of Applied Physics, Université de Genève, 1211 Genève 4, Switzerland
| | - Y Mugnier
- Université Savoie Mont Blanc, SYMME, F-74000, Annecy, France.
| | - R Le Dantec
- Université Savoie Mont Blanc, SYMME, F-74000, Annecy, France.
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Hu Y, Ma J, Li Y, Jiang Y, Gawryluk DJ, Hu T, Teyssier J, Multian V, Yin Z, Xu S, Shin S, Plokhikh I, Han X, Plumb NC, Liu Y, Yin JX, Guguchia Z, Zhao Y, Schnyder AP, Wu X, Pomjakushina E, Hasan MZ, Wang N, Shi M. Publisher Correction: Phonon promoted charge density wave in topological kagome metal ScV 6Sn 6. Nat Commun 2024; 15:2196. [PMID: 38467632 PMCID: PMC10928204 DOI: 10.1038/s41467-024-46562-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024] Open
Affiliation(s)
- Yong Hu
- Photon Science Division, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Center of Quantum Materials and Devices and Department of Applied Physics, Chongqing University, 401331, Chongqing, China.
| | - Junzhang Ma
- Department of Physics, City University of Hong Kong, Kowloon, Hong Kong, China
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
- Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Yinxiang Li
- College of Science, University of Shanghai for Science and Technology, 200093, Shanghai, China
| | - Yuxiao Jiang
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, USA
| | - Dariusz Jakub Gawryluk
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - Tianchen Hu
- International Center for Quantum Materials, School of Physics, Peking University, 100871, Beijing, China
| | - Jérémie Teyssier
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211, Geneva 4, Switzerland
| | - Volodymyr Multian
- Advanced Materials Nonlinear Optical Diagnostics lab, Institute of Physics, NAS of Ukraine, 46 Nauky pr., 03028, Kyiv, Ukraine
| | - Zhouyi Yin
- Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology of China, Shenzhen, Guangdong, 518055, China
| | - Shuxiang Xu
- International Center for Quantum Materials, School of Physics, Peking University, 100871, Beijing, China
| | - Soohyeon Shin
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - Igor Plokhikh
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - Xinloong Han
- Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences, 100190, Beijing, China
| | - Nicholas C Plumb
- Photon Science Division, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - Yang Liu
- Center for Correlated Matter and Department of Physics, Zhejiang University, 310058, Hangzhou, China
| | - Jia-Xin Yin
- Department of physics, Southern University of Science and Technology, 518055, Shenzhen, Guangdong, China
| | - Zurab Guguchia
- Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232, Villigen PSI, Switzerland
| | - Yue Zhao
- Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology of China, Shenzhen, Guangdong, 518055, China
| | - Andreas P Schnyder
- Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569, Stuttgart, Germany
| | - Xianxin Wu
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China.
| | - Ekaterina Pomjakushina
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - M Zahid Hasan
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, USA
| | - Nanlin Wang
- International Center for Quantum Materials, School of Physics, Peking University, 100871, Beijing, China
- Beijing Academy of Quantum Information Sciences, Beijing, 100913, China
- Collaborative Innovation Center of Quantum Matter, Beijing, 100871, China
| | - Ming Shi
- Photon Science Division, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Center for Correlated Matter and Department of Physics, Zhejiang University, 310058, Hangzhou, China.
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Hu Y, Ma J, Li Y, Jiang Y, Gawryluk DJ, Hu T, Teyssier J, Multian V, Yin Z, Xu S, Shin S, Plokhikh I, Han X, Plumb NC, Liu Y, Yin JX, Guguchia Z, Zhao Y, Schnyder AP, Wu X, Pomjakushina E, Hasan MZ, Wang N, Shi M. Phonon promoted charge density wave in topological kagome metal ScV 6Sn 6. Nat Commun 2024; 15:1658. [PMID: 38395887 PMCID: PMC10891150 DOI: 10.1038/s41467-024-45859-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
Charge density wave (CDW) orders in vanadium-based kagome metals have recently received tremendous attention, yet their origin remains a topic of debate. The discovery of ScV6Sn6, a bilayer kagome metal featuring an intriguing [Formula: see text] CDW order, offers a novel platform to explore the underlying mechanism behind the unconventional CDW. Here, we combine high-resolution angle-resolved photoemission spectroscopy, Raman scattering and density functional theory to investigate the electronic structure and phonon modes of ScV6Sn6. We identify topologically nontrivial surface states and multiple van Hove singularities (VHSs) in the vicinity of the Fermi level, with one VHS aligning with the in-plane component of the CDW vector near the [Formula: see text] point. Additionally, Raman measurements indicate a strong electron-phonon coupling, as evidenced by a two-phonon mode and new emergent modes. Our findings highlight the fundamental role of lattice degrees of freedom in promoting the CDW in ScV6Sn6.
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Affiliation(s)
- Yong Hu
- Photon Science Division, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Center of Quantum Materials and Devices and Department of Applied Physics, Chongqing University, 401331, Chongqing, China.
| | - Junzhang Ma
- Department of Physics, City University of Hong Kong, Kowloon, Hong Kong, China
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
- Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Yinxiang Li
- College of Science, University of Shanghai for Science and Technology, 200093, Shanghai, China
| | - Yuxiao Jiang
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, USA
| | - Dariusz Jakub Gawryluk
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - Tianchen Hu
- International Center for Quantum Materials, School of Physics, Peking University, 100871, Beijing, China
| | - Jérémie Teyssier
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211, Geneva 4, Switzerland
| | - Volodymyr Multian
- Advanced Materials Nonlinear Optical Diagnostics lab, Institute of Physics, NAS of Ukraine, 46 Nauky pr., 03028, Kyiv, Ukraine
| | - Zhouyi Yin
- Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology of China, Shenzhen, Guangdong, 518055, China
| | - Shuxiang Xu
- International Center for Quantum Materials, School of Physics, Peking University, 100871, Beijing, China
| | - Soohyeon Shin
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - Igor Plokhikh
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - Xinloong Han
- Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences, 100190, Beijing, China
| | - Nicholas C Plumb
- Photon Science Division, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - Yang Liu
- Center for Correlated Matter and Department of Physics, Zhejiang University, 310058, Hangzhou, China
| | - Jia-Xin Yin
- Department of physics, Southern University of Science and Technology, 518055, Shenzhen, Guangdong, China
| | - Zurab Guguchia
- Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232, Villigen PSI, Switzerland
| | - Yue Zhao
- Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology of China, Shenzhen, Guangdong, 518055, China
| | - Andreas P Schnyder
- Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569, Stuttgart, Germany
| | - Xianxin Wu
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China.
| | - Ekaterina Pomjakushina
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - M Zahid Hasan
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, USA
| | - Nanlin Wang
- International Center for Quantum Materials, School of Physics, Peking University, 100871, Beijing, China
- Beijing Academy of Quantum Information Sciences, Beijing, 100913, China
- Collaborative Innovation Center of Quantum Matter, Beijing, 100871, China
| | - Ming Shi
- Photon Science Division, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Center for Correlated Matter and Department of Physics, Zhejiang University, 310058, Hangzhou, China.
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Yao F, Multian V, Wang Z, Ubrig N, Teyssier J, Wu F, Giannini E, Gibertini M, Gutiérrez-Lezama I, Morpurgo AF. Author Correction: Multiple antiferromagnetic phases and magnetic anisotropy in exfoliated CrBr 3 multilayers. Nat Commun 2023; 14:5771. [PMID: 37723169 PMCID: PMC10507045 DOI: 10.1038/s41467-023-41613-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/20/2023] Open
Affiliation(s)
- Fengrui Yao
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland.
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland.
| | - Volodymyr Multian
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Advanced Materials Nonlinear Optical Diagnostics lab, Institute of Physics, NAS of Ukraine, 46 Nauky pr., 03028, Kyiv, Ukraine
| | - Zhe Wang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Advanced Materials and Mesoscopic Physics, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Nicolas Ubrig
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Jérémie Teyssier
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Fan Wu
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Enrico Giannini
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Marco Gibertini
- Dipartimento di Scienze Fisiche, Informatiche e Matematiche, University of Modena and Reggio Emilia, IT-41125, Modena, Italy
- Centro S3, CNR-Istituto Nanoscienze, IT-41125, Modena, Italy
| | - Ignacio Gutiérrez-Lezama
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Alberto F Morpurgo
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland.
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland.
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Yao F, Multian V, Wang Z, Ubrig N, Teyssier J, Wu F, Giannini E, Gibertini M, Gutiérrez-Lezama I, Morpurgo AF. Multiple antiferromagnetic phases and magnetic anisotropy in exfoliated CrBr 3 multilayers. Nat Commun 2023; 14:4969. [PMID: 37591960 PMCID: PMC10435511 DOI: 10.1038/s41467-023-40723-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 08/08/2023] [Indexed: 08/19/2023] Open
Abstract
In twisted two-dimensional (2D) magnets, the stacking dependence of the magnetic exchange interaction can lead to regions of ferromagnetic and antiferromagnetic interlayer order, separated by non-collinear, skyrmion-like spin textures. Recent experimental searches for these textures have focused on CrI3, known to exhibit either ferromagnetic or antiferromagnetic interlayer order, depending on layer stacking. However, the very strong uniaxial anisotropy of CrI3 disfavors smooth non-collinear phases in twisted bilayers. Here, we report the experimental observation of three distinct magnetic phases-one ferromagnetic and two antiferromagnetic-in exfoliated CrBr3 multilayers, and reveal that the uniaxial anisotropy is significantly smaller than in CrI3. These results are obtained by magnetoconductance measurements on CrBr3 tunnel barriers and Raman spectroscopy, in conjunction with density functional theory calculations, which enable us to identify the stackings responsible for the different interlayer magnetic couplings. The detection of all locally stable magnetic states predicted to exist in CrBr3 and the excellent agreement found between theory and experiments, provide complete information on the stacking-dependent interlayer exchange energy and establish twisted bilayer CrBr3 as an ideal system to deterministically create non-collinear magnetic phases.
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Affiliation(s)
- Fengrui Yao
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland.
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland.
| | - Volodymyr Multian
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Advanced Materials Nonlinear Optical Diagnostics lab, Institute of Physics, NAS of Ukraine, 46 Nauky pr., 03028, Kyiv, Ukraine
| | - Zhe Wang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Advanced Materials and Mesoscopic Physics, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Nicolas Ubrig
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Jérémie Teyssier
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Fan Wu
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Enrico Giannini
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Marco Gibertini
- Dipartimento di Scienze Fisiche, Informatiche e Matematiche, University of Modena and Reggio Emilia, IT-41125, Modena, Italy
- Centro S3, CNR-Istituto Nanoscienze, IT-41125, Modena, Italy
| | - Ignacio Gutiérrez-Lezama
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Alberto F Morpurgo
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland.
- Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland.
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