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Sakakibara H, Kitamine N, Ochi M, Kuroki K. Possible High T_{c} Superconductivity in La_{3}Ni_{2}O_{7} under High Pressure through Manifestation of a Nearly Half-Filled Bilayer Hubbard Model. PHYSICAL REVIEW LETTERS 2024; 132:106002. [PMID: 38518340 DOI: 10.1103/physrevlett.132.106002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 02/07/2024] [Indexed: 03/24/2024]
Abstract
Inspired by a recent experiment showing that La_{3}Ni_{2}O_{7} exhibits high T_{c} superconductivity under high pressure, we theoretically revisit the possibility of superconductivity in this material. We find that superconductivity can take place, which is somewhat similar to that of the bilayer Hubbard model consisting of the Ni 3d_{3z^{2}-r^{2}} orbitals. Although the coupling with the 3d_{x^{2}-y^{2}} orbitals degrades superconductivity, T_{c} can still be high enough to understand the experiment thanks to the very high T_{c} reached in the bilayer Hubbard model.
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Affiliation(s)
- Hirofumi Sakakibara
- Advanced Mechanical and Electronic System Research Center(AMES), Faculty of Engineering, Tottori University, 4-10 Koyama-cho, Tottori, Tottori 680-8552, Japan
- Computational Condensed Matter Physics Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
| | - Naoya Kitamine
- Department of Physics, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Masayuki Ochi
- Department of Physics, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Forefront Research Center, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Kazuhiko Kuroki
- Department of Physics, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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Wang H, Zhu Y, Bai Z, Wang Z, Hu S, Xie HY, Hu X, Cui J, Huang M, Chen J, Ding Y, Zhao L, Li X, Zhang Q, Gu L, Zhou XJ, Zhu J, Zhang D, Xue QK. Prominent Josephson tunneling between twisted single copper oxide planes of Bi 2Sr 2-xLa xCuO 6+y. Nat Commun 2023; 14:5201. [PMID: 37626041 PMCID: PMC10457331 DOI: 10.1038/s41467-023-40525-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 07/21/2023] [Indexed: 08/27/2023] Open
Abstract
Josephson tunneling in twisted cuprate junctions provides a litmus test for the pairing symmetry, which is fundamental for understanding the microscopic mechanism of high temperature superconductivity. This issue is rekindled by experimental advances in van der Waals stacking and the proposal of an emergent d+id-wave. So far, all experiments have been carried out on Bi2Sr2CaCu2O8+x (Bi-2212) with double CuO2 planes but show controversial results. Here, we investigate junctions made of Bi2Sr2-xLaxCuO6+y (Bi-2201) with single CuO2 planes. Our on-site cold stacking technique ensures uncompromised crystalline quality and stoichiometry at the interface. Junctions with carefully calibrated twist angles around 45° show strong Josephson tunneling and conventional temperature dependence. Furthermore, we observe standard Fraunhofer diffraction patterns and integer Fiske steps in a junction with a twist angle of 45.0±0.2°. Together, these results pose strong constraints on the d or d+id-wave pairing and suggest an indispensable isotropic pairing component.
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Affiliation(s)
- Heng Wang
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, 100084, China
| | - Yuying Zhu
- Beijing Academy of Quantum Information Sciences, Beijing, 100193, China.
- Hefei National Laboratory, Hefei, 230088, China.
| | - Zhonghua Bai
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, 100084, China
| | - Zechao Wang
- National Center for Electron Microscopy in Beijing, School of Materials Science and Engineering, Key Laboratory of Advanced Materials (MOE), The State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing, 100084, China
- Ji Hua Laboratory, Foshan, Guangdong, 528200, China
| | - Shuxu Hu
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, 100084, China
| | - Hong-Yi Xie
- Beijing Academy of Quantum Information Sciences, Beijing, 100193, China
| | - Xiaopeng Hu
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, 100084, China
| | - Jian Cui
- Beijing Academy of Quantum Information Sciences, Beijing, 100193, China
| | - Miaoling Huang
- Beijing Academy of Quantum Information Sciences, Beijing, 100193, China
| | - Jianhao Chen
- Beijing Academy of Quantum Information Sciences, Beijing, 100193, China
- International Center for Quantum Materials, School of Physics, Peking University, Beijing, 100091, China
| | - Ying Ding
- Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Lin Zhao
- Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xinyan Li
- Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Qinghua Zhang
- Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Lin Gu
- National Center for Electron Microscopy in Beijing, School of Materials Science and Engineering, Key Laboratory of Advanced Materials (MOE), The State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing, 100084, China
- Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - X J Zhou
- Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jing Zhu
- National Center for Electron Microscopy in Beijing, School of Materials Science and Engineering, Key Laboratory of Advanced Materials (MOE), The State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing, 100084, China
- Ji Hua Laboratory, Foshan, Guangdong, 528200, China
| | - Ding Zhang
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, 100084, China.
- Beijing Academy of Quantum Information Sciences, Beijing, 100193, China.
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama, 351-0198, Japan.
| | - Qi-Kun Xue
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, 100084, China.
- Beijing Academy of Quantum Information Sciences, Beijing, 100193, China.
- Southern University of Science and Technology, Shenzhen, 518055, China.
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Koepsell J, Hirthe S, Bourgund D, Sompet P, Vijayan J, Salomon G, Gross C, Bloch I. Robust Bilayer Charge Pumping for Spin- and Density-Resolved Quantum Gas Microscopy. PHYSICAL REVIEW LETTERS 2020; 125:010403. [PMID: 32678648 DOI: 10.1103/physrevlett.125.010403] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
Quantum gas microscopy has emerged as a powerful new way to probe quantum many-body systems at the microscopic level. However, layered or efficient spin-resolved readout methods have remained scarce as they impose strong demands on the specific atomic species and constrain the simulated lattice geometry and size. Here we present a novel high-fidelity bilayer readout, which can be used for full spin- and density-resolved quantum gas microscopy of two-dimensional systems with arbitrary geometry. Our technique makes use of an initial Stern-Gerlach splitting into adjacent layers of a highly stable vertical superlattice and subsequent charge pumping to separate the layers by 21 μm. This separation enables independent high-resolution images of each layer. We benchmark our method by spin- and density-resolving two-dimensional Fermi-Hubbard systems. Our technique furthermore enables the access to advanced entropy engineering schemes, spectroscopic methods, or the realization of tunable bilayer systems.
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Affiliation(s)
- Joannis Koepsell
- Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), 80799 München, Germany
| | - Sarah Hirthe
- Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), 80799 München, Germany
| | - Dominik Bourgund
- Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), 80799 München, Germany
| | - Pimonpan Sompet
- Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), 80799 München, Germany
| | - Jayadev Vijayan
- Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), 80799 München, Germany
| | - Guillaume Salomon
- Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), 80799 München, Germany
| | - Christian Gross
- Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), 80799 München, Germany
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - Immanuel Bloch
- Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), 80799 München, Germany
- Fakultät für Physik, Ludwig-Maximilians-Universität, 80799 München, Germany
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Mazin II, Singh DJ, Johannes MD, Du MH. Unconventional superconductivity with a sign reversal in the order parameter of LaFeAsO1-xFx. PHYSICAL REVIEW LETTERS 2008; 101:057003. [PMID: 18764420 DOI: 10.1103/physrevlett.101.057003] [Citation(s) in RCA: 407] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2008] [Indexed: 05/15/2023]
Abstract
We argue that the newly discovered superconductivity in a nearly magnetic, Fe-based layered compound is unconventional and mediated by antiferromagnetic spin fluctuations, though different from the usual superexchange and specific to this compound. This resulting state is an example of extended s-wave pairing with a sign reversal of the order parameter between different Fermi surface sheets. The main role of doping in this scenario is to lower the density of states and suppress the pair-breaking ferromagnetic fluctuations.
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Affiliation(s)
- I I Mazin
- Code 6393, Naval Research Laboratory, Washington, D.C. 20375, USA
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Nazarenko A, Dagotto E. Hole dispersion and symmetry of the superconducting order parameter for underdoped CuO2 bilayers and the three-dimensional antiferromagnets. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:13158-13166. [PMID: 9985177 DOI: 10.1103/physrevb.54.13158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Williams GV, Tallon JL, Michalak R, Dupree R. NMR evidence for common superconducting and pseudogap phase diagrams of YBa2Cu3O7- delta and La2-xSrxCaCu2O6. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R6909-R6912. [PMID: 9984411 DOI: 10.1103/physrevb.54.r6909] [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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Dahm T, Manske D, Tewordt L. Quasiparticle and spin excitations for two coupled Hubbard planes and comparison with experiments on bilayer YBa2Cu3O6+x. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:6640-6647. [PMID: 9986683 DOI: 10.1103/physrevb.54.6640] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Combescot R, Leyronas X. Plane-chain coupling in YBa2Cu3O7: Impurity effect on the critical temperature. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:4320-4330. [PMID: 9986338 DOI: 10.1103/physrevb.54.4320] [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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Krantz M. Superconducting gap symmetries in YBa2Cu3O7- delta compatible with electronic Raman efficiencies and the local-density-approximation band structure. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:1334-1341. [PMID: 9985406 DOI: 10.1103/physrevb.54.1334] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Forsthofer F, Kind S, Keller J. Collective modes in the electronic polarization of double-layer systems in the superconducting state. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:14481-14495. [PMID: 9983247 DOI: 10.1103/physrevb.53.14481] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Radtke RJ, Liechtenstein AI, Yakovenko VM. Antiferromagnetic interactions and the superconducting gap function. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:5137-5140. [PMID: 9984110 DOI: 10.1103/physrevb.53.5137] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Maly J, Liu DZ, Levin K. Superconducting order parameter symmetry in multilayer cuprates. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:6786-6805. [PMID: 9982081 DOI: 10.1103/physrevb.53.6786] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Tsuei CC, Kirtley JR, Rupp M, Sun JZ, Gupta A, Ketchen MB, Wang CA, Ren ZF, Wang JH, Bhushan M. Pairing Symmetry in Single-Layer Tetragonal Tl2Ba2CuO[IMAGE] Superconductors. Science 1996. [DOI: 10.1126/science.271.5247.329] [Citation(s) in RCA: 197] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Mierzejewski M, Zielinski J, Entel P. d-wave superconductivity in a strongly correlated electron-phonon system. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:431-437. [PMID: 9981995 DOI: 10.1103/physrevb.53.431] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mazin II, Yakovenko VM. Neutron scattering and superconducting order parameter in YBa2Cu3O7. PHYSICAL REVIEW LETTERS 1995; 75:4134-4137. [PMID: 10059823 DOI: 10.1103/physrevlett.75.4134] [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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Combescot R, Leyronas X. Coupling between planes and chains in YBa2Cu3O7: A possible solution for the order parameter controversy. PHYSICAL REVIEW LETTERS 1995; 75:3732-3735. [PMID: 10059713 DOI: 10.1103/physrevlett.75.3732] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Dotsenko AV. Effective-action approach to a bilayer frustrated antiferromagnet. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:9170-9173. [PMID: 9979952 DOI: 10.1103/physrevb.52.9170] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mazin II, Golubov AA, Zaikin AD. "Chain scenario" for Josephson tunneling with pi shift in YBa2Cu3O7. PHYSICAL REVIEW LETTERS 1995; 75:2574-2577. [PMID: 10059346 DOI: 10.1103/physrevlett.75.2574] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Eder R, Ohta Y, Maekawa S. Ground-state properties and dynamics of the bilayer t-J model. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:7708-7714. [PMID: 9979716 DOI: 10.1103/physrevb.52.7708] [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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Fong HF, Keimer B, Anderson PW, Reznik D, Dogan F, Aksay IA. Phonon and magnetic neutron scattering at 41 meV in YBa2Cu3O7. PHYSICAL REVIEW LETTERS 1995; 75:316-319. [PMID: 10059663 DOI: 10.1103/physrevlett.75.316] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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