t-J model on the effective brick-wall lattice for the recently discovered high-temperature superconductor Ba2CuO3+delta
文献类型：期刊论文
| 作者 | Wang, Zhan; Zhou, Sen5 ; Chen, Weiqiang1,3; Zhang, Fu-Chun
|
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2020 |
| 卷号 | 101期号:18页码:180509 |
| 关键词 | PHYSICS |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.101.180509 |
| 英文摘要 | 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. |
| 学科主题 | Materials Science ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27119]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Chinese Acad Sci, Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China 2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China 3.Southern Univ Sci & Technol, Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China 5.Univ Chinese Acad Sci, Kayli Inst Theoret Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：理论物理研究所
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