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Acha C, Sanca G, Barella M, Alurralde M, Marlasca FG, Huhtinen H, Paturi P, Golmar F, Levy P. Proton irradiation effects on metal-YBCO interfaces. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Marinković S, Fernández-Rodríguez A, Collienne S, Alvarez SB, Melinte S, Maiorov B, Rius G, Granados X, Mestres N, Palau A, Silhanek AV. Direct Visualization of Current-Stimulated Oxygen Migration in YBa 2Cu 3O 7-δ Thin Films. ACS NANO 2020; 14:11765-11774. [PMID: 32806022 DOI: 10.1021/acsnano.0c04492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The past years have witnessed major advancements in all-electrical doping control on cuprates. In the vast majority of cases, the tuning of charge carrier density has been achieved via electric field effect by means of either a ferroelectric polarization or using a dielectric or electrolyte gating. Unfortunately, these approaches are constrained to rather thin superconducting layers and require large electric fields in order to ensure sizable carrier modulations. In this work, we focus on the investigation of oxygen doping in an extended region through current-stimulated oxygen migration in YBa2Cu3O7-δ superconducting bridges. The underlying methodology is rather simple and avoids sophisticated nanofabrication process steps and complex electronics. A patterned multiterminal transport bridge configuration allows us to electrically assess the directional counterflow of oxygen atoms and vacancies. Importantly, the emerging propagating front of current-dependent doping δ is probed in situ by optical microscopy and scanning electron microscopy. The resulting imaging techniques, together with photoinduced conductivity and Raman scattering investigations, reveal an inhomogeneous oxygen vacancy distribution with a controllable propagation speed permitting us to estimate the oxygen diffusivity. These findings provide direct evidence that the microscopic mechanism at play in electrical doping of cuprates involves diffusion of oxygen atoms with the applied current. The resulting fine control of the oxygen content would permit a systematic study of complex phase diagrams and the design of electrically addressable devices.
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Affiliation(s)
- Stefan Marinković
- Experimental Physics of Nanostructured Materials, Q-MAT, CESAM, Université de Liège, Sart Tilman, B-4000 Liège, Belgium
| | | | - Simon Collienne
- Experimental Physics of Nanostructured Materials, Q-MAT, CESAM, Université de Liège, Sart Tilman, B-4000 Liège, Belgium
| | - Sylvain Blanco Alvarez
- Experimental Physics of Nanostructured Materials, Q-MAT, CESAM, Université de Liège, Sart Tilman, B-4000 Liège, Belgium
| | - Sorin Melinte
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Boris Maiorov
- Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Gemma Rius
- Institute of Microelectronics of Barcelona (IMB-CNM, CSIC), Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Xavier Granados
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Narcís Mestres
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Anna Palau
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Alejandro V Silhanek
- Experimental Physics of Nanostructured Materials, Q-MAT, CESAM, Université de Liège, Sart Tilman, B-4000 Liège, Belgium
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Baumans XDA, Lombardo J, Brisbois J, Shaw G, Zharinov VS, He G, Yu H, Yuan J, Zhu B, Jin K, Kramer RBG, de Vondel JV, Silhanek AV. Healing Effect of Controlled Anti-Electromigration on Conventional and High-T c Superconducting Nanowires. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1700384. [PMID: 28544388 DOI: 10.1002/smll.201700384] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 04/04/2017] [Indexed: 06/07/2023]
Abstract
The electromigration process has the potential capability to move atoms one by one when properly controlled. It is therefore an appealing tool to tune the cross section of monoatomic compounds with ultimate resolution or, in the case of polyatomic compounds, to change the stoichiometry with the same atomic precision. As demonstrated here, a combination of electromigration and anti-electromigration can be used to reversibly displace atoms with a high degree of control. This enables a fine adjustment of the superconducting properties of Al weak links, whereas in Nb the diffusion of atoms leads to a more irreversible process. In a superconductor with a complex unit cell (La2-x Cex CuO4 ), the electromigration process acts selectively on the oxygen atoms with no apparent modification of the structure. This allows to adjust the doping of this compound and switch from a superconducting to an insulating state in a nearly reversible fashion. In addition, the conditions needed to replace feedback controlled electromigration by a simpler technique of electropulsing are discussed. These findings have a direct practical application as a method to explore the dependence of the characteristic parameters on the exact oxygen content and pave the way for a reversible control of local properties of nanowires.
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Affiliation(s)
- Xavier D A Baumans
- Experimental Physics of Nanostructured Materials, Q-MAT, CESAM, Université de Liège, B-4000, Sart Tilman, Belgium
| | - Joseph Lombardo
- Experimental Physics of Nanostructured Materials, Q-MAT, CESAM, Université de Liège, B-4000, Sart Tilman, Belgium
| | - Jérémy Brisbois
- Experimental Physics of Nanostructured Materials, Q-MAT, CESAM, Université de Liège, B-4000, Sart Tilman, Belgium
| | - Gorky Shaw
- Experimental Physics of Nanostructured Materials, Q-MAT, CESAM, Université de Liège, B-4000, Sart Tilman, Belgium
| | - Vyacheslav S Zharinov
- INPAC - Institute for Nanoscale Physics and Chemistry, Department of Physics and Astronomy, KU Leuven, B-3001, Leuven, Belgium
| | - Ge He
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Heshan Yu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jie Yuan
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Beiyi Zhu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Kui Jin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Roman B G Kramer
- Université Grenoble Alpes, Institut NEEL, F-38000, Grenoble, France
- CNRS, Institut NEEL, F-38000, Grenoble, France
| | - Joris Van de Vondel
- INPAC - Institute for Nanoscale Physics and Chemistry, Department of Physics and Astronomy, KU Leuven, B-3001, Leuven, Belgium
| | - Alejandro V Silhanek
- Experimental Physics of Nanostructured Materials, Q-MAT, CESAM, Université de Liège, B-4000, Sart Tilman, Belgium
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In operando evidence of deoxygenation in ionic liquid gating of YBa2Cu3O7-X. Proc Natl Acad Sci U S A 2016; 114:215-220. [PMID: 28028236 DOI: 10.1073/pnas.1613006114] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Field-effect experiments on cuprates using ionic liquids have enabled the exploration of their rich phase diagrams [Leng X, et al. (2011) Phys Rev Lett 107(2):027001]. Conventional understanding of the electrostatic doping is in terms of modifications of the charge density to screen the electric field generated at the double layer. However, it has been recently reported that the suppression of the metal to insulator transition induced in VO2 by ionic liquid gating is due to oxygen vacancy formation rather than to electrostatic doping [Jeong J, et al. (2013) Science 339(6126):1402-1405]. These results underscore the debate on the true nature, electrostatic vs. electrochemical, of the doping of cuprates with ionic liquids. Here, we address the doping mechanism of the high-temperature superconductor YBa2Cu3O7-X (YBCO) by simultaneous ionic liquid gating and X-ray absorption experiments. Pronounced spectral changes are observed at the Cu K-edge concomitant with the superconductor-to-insulator transition, evidencing modification of the Cu coordination resulting from the deoxygenation of the CuO chains, as confirmed by first-principles density functional theory (DFT) simulations. Beyond providing evidence of the importance of chemical doping in electric double-layer (EDL) gating experiments with superconducting cuprates, our work shows that interfacing correlated oxides with ionic liquids enables a delicate control of oxygen content, paving the way to novel electrochemical concepts in future oxide electronics.
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Electric Field Induced Resistance Change of SrFeO2.5-x Film. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2010. [DOI: 10.1380/ejssnt.2010.346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Investigating the atomic scale structure and chemistry of grain boundaries in high- T c superconductors. Micron 1999. [DOI: 10.1016/s0968-4328(99)00044-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Darhmaoui H, Jung J. Crossover effects in the temperature dependence of the critical current in YBa2Cu3O7- delta. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:14621-14630. [PMID: 9983263 DOI: 10.1103/physrevb.53.14621] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Sergeenkov S, Ausloos M. Field-induced aging effects in inhomogeneous superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:13619-13624. [PMID: 9980561 DOI: 10.1103/physrevb.52.13619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Antognazza L, Moeckly BH, Geballe TH, Char K. Properties of high-Tc Josephson junctions with Y0.7Ca0.3Ba2Cu3O7- delta barrier layers. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:4559-4567. [PMID: 9981591 DOI: 10.1103/physrevb.52.4559] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Doderer T, Zhang YM, Winkler D, Gross R. Imaging of electromagnetic resonances in a YBa2Cu3O7- delta bicrystal grain-boundary Josephson junction. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:93-96. [PMID: 9979578 DOI: 10.1103/physrevb.52.93] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Liu L, Nowak ER, Jaeger HM, Vuchic BV, Merkle KL, Buchholz DB, Chang RP. High-angle grain-boundary junctions in YBa2Cu3O7: Normal-state resistance and 1/f noise. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:16164-16167. [PMID: 9978599 DOI: 10.1103/physrevb.51.16164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wickham LK, Sethna JP. Fast domain growth through density-dependent diffusion in a driven lattice gas. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:15017-15026. [PMID: 9978456 DOI: 10.1103/physrevb.51.15017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Marx A, Fath U, Ludwig W, Gross R, Amrein T. 1/f noise in Bi2Sr2CaCu2O8+x bicrystal grain-boundary Josephson junctions. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:6735-6738. [PMID: 9977215 DOI: 10.1103/physrevb.51.6735] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Scouten S, Xu Y, Moeckly BH, Buhrman RA. Low-frequency noise in the normal state of thin-film high-temperature superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:16121-16124. [PMID: 9975994 DOI: 10.1103/physrevb.50.16121] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Early EA, Steiner RL, Clark AF, Char K. Evidence for parallel junctions within high-Tc grain-boundary junctions. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:9409-9418. [PMID: 9974991 DOI: 10.1103/physrevb.50.9409] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Gupta A, Sun JZ, Tsuei CC. Mercury-Based Cuprate High-Transition Temperature Grain-Boundary Junctions and SQUIDs Operating Above 110 Kelvin. Science 1994; 265:1075-7. [PMID: 17832899 DOI: 10.1126/science.265.5175.1075] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The superconducting transport characteristics of HgBa(2) CaCu(2)O(6+delta) (Hg-1212) films and grain-boundary junctions grown on (100)-oriented SrTiO(3) bicrystal substrates have been investigated. The films exhibit a zero-resistance temperature of approximately 120 kelvin and sustain large critical current densities, with values as high as 10(6) amperes per square centimeter at around 100 kelvin. On the other hand, the grain boundaries behave as weak links, with substantially lower critical currents, as is observed for other cuprate superconductors. A reduction of three orders of magnitude in critical current was observed for transport across a 36.8 degrees grain boundary. The current-voltage characteristics of bridges across such a grain boundary show weak-link behavior qualitatively resembling that of a resistively shunted junction. Single-level direct-current superconducting quantum interference devices (SQUIDs) have been fabricated with such bicrystal junctions. These SQUIDs show clear periodic voltage modulations when subjected to applied magnetic fields. The SQUIDs operate at temperatures as high as 111.8 kelvin, which makes them attractive for operation in portable sensors and devices that utilize nonconventional cooling methods.
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Sergeenkov SA, Gridin VV. Tunable atomic-scale Josephson effect in dislocated high-Tc superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:1293-1296. [PMID: 9975807 DOI: 10.1103/physrevb.50.1293] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Levitation forces, stiffness and force-creep in YBCO high-Tc superconducting thin films. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0964-1807(94)90042-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kula W, Sobolewski R. Charging effect in partially oxygen-depleted superconducting Y-Ba-Cu-O thin films. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:6428-6431. [PMID: 10011651 DOI: 10.1103/physrevb.49.6428] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Chandrasekhar N, Valls OT, Goldman AM. Charging effects observed in YBa2Cu3O7-x films: Influence of oxygen ordering. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:6220-6227. [PMID: 10011606 DOI: 10.1103/physrevb.49.6220] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Winkler D, Zhang YM, Nilsson PÅ, Stepantsov EA, Claeson T. Electromagnetic properties at the grain boundary interface of a YBa2Cu3O7- delta bicrystal Josephson junction. PHYSICAL REVIEW LETTERS 1994; 72:1260-1263. [PMID: 10056663 DOI: 10.1103/physrevlett.72.1260] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Kiss LB, Svedlindh P. New noise exponents in random conductor-superconductor and conductor-insulator mixtures. PHYSICAL REVIEW LETTERS 1993; 71:2817-2820. [PMID: 10054783 DOI: 10.1103/physrevlett.71.2817] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Halbritter J. Extrinsic or intrinsic conduction in cuprates: Anisotropy, weak, and strong links. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:9735-9746. [PMID: 10007222 DOI: 10.1103/physrevb.48.9735] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Chandrasekhar N, Valls OT, Goldman AM. Mechanism for electric field effects observed in YBa2Cu3O7-x films. PHYSICAL REVIEW LETTERS 1993; 71:1079-1082. [PMID: 10055443 DOI: 10.1103/physrevlett.71.1079] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Gong T, Zheng LX, Xiong W, Kula W, Kostoulas Y, Sobolewski R, Fauchet PM. Femtosecond optical response of Y-Ba-Cu-O thin films: The dependence on optical frequency, excitation intensity, and electric current. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:14495-14502. [PMID: 10005802 DOI: 10.1103/physrevb.47.14495] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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