Knowledge Management System of Institute of Theoretical Physics, CAS
Wang, Zhan; Zhou, Sen1![]() | |
t-J model on the effective brick-wall lattice for the recently discovered high-temperature superconductor Ba2CuO3+delta | |
Source Publication | PHYSICAL REVIEW B
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Language | 英语 |
Keyword | PHYSICS |
Abstract | Layered copper oxides have the highest superconducting transition temperatures at ambient pressure. Its mechanism remains a major challenge in condensed matter physics. The essential physics lying in two-dimensional copper-oxygen layers is well described by a single-band Hubbard model or its strong-coupling limit t-J model in a two-dimensional square lattice. The recently discovered high-temperature superconductor Ba2CuO3+delta with delta similar to 0.2 has a different crystal structure with a large portion of in-plane oxygen vacancies. We observe that an oxygen vacancy breaks the bond of its two neighboring copper atoms, and propose the ordered vacancies in Ba2CuO3+delta lead to an extended t-J model on an effective brick-wall lattice. For the nearest-neighbor hopping, the brick-wall model can be mapped onto the t-J model on a honeycomb lattice. Our theory explains the superconductivity of Ba2CuO3+delta at a high charge carrier density, and predicts a time-reversal symmetry-broken pairing state. |
2020 | |
ISSN | 2469-9950 |
Volume | 101Issue:18Pages:180509 |
Cooperation Status | 国内 |
Subject Area | Materials Science ; Physics |
MOST Discipline Catalogue | Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
DOI | 10.1103/PhysRevB.101.180509 |
Indexed By | SCIE |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.itp.ac.cn/handle/311006/27119 |
Collection | SCI期刊论文 |
Affiliation | 1.Univ Chinese Acad Sci, Kayli Inst Theoret Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China 4.Southern Univ Sci & Technol, Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China 5.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China |
Recommended Citation GB/T 7714 | Wang, Zhan,Zhou, Sen,Chen, Weiqiang,et al. t-J model on the effective brick-wall lattice for the recently discovered high-temperature superconductor Ba2CuO3+delta[J]. PHYSICAL REVIEW B,2020,101(18):180509. |
APA | Wang, Zhan,Zhou, Sen,Chen, Weiqiang,&Zhang, Fu-Chun.(2020).t-J model on the effective brick-wall lattice for the recently discovered high-temperature superconductor Ba2CuO3+delta.PHYSICAL REVIEW B,101(18),180509. |
MLA | Wang, Zhan,et al."t-J model on the effective brick-wall lattice for the recently discovered high-temperature superconductor Ba2CuO3+delta".PHYSICAL REVIEW B 101.18(2020):180509. |
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