t-J model on the effective brick-wall lattice for the recently discovered high-temperature superconductor Ba2CuO3+delta

doi:10.1103/PhysRevB.101.180509

ITP OpenIR > SCI期刊论文

	Wang, Zhan ; Zhou, Sen1 ; Chen, Weiqiang 3,4; Zhang, Fu-Chun
	t-J model on the effective brick-wall lattice for the recently discovered high-temperature superconductor Ba2CuO3+delta
Source Publication	PHYSICAL REVIEW B
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	101 Issue:18 Pages: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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