Spin-triplet pairing induced by near-neighbor attraction in the extended Hubbard model for cuprate chain

doi:10.1038/s42005-022-01030-x

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	Spin-triplet pairing induced by near-neighbor attraction in the extended Hubbard model for cuprate chain
	Qu, Dai-Wei ; Chen, Bin-Bin ; Jiang, Hong-Chen ; Wang, Yao 7; Li, Wei 1,2
刊名	COMMUNICATIONS PHYSICS
	2022
卷号	5 期号:1 页码:257
关键词	PHASE-DIAGRAM CORRELATION EXPONENTS SPECTRAL PROPERTIES 4PF INSTABILITIES 2 DIMENSIONS SUPERCONDUCTIVITY SYMMETRIES TRANSITION CHARGE SEPARATION
ISSN号	2399-3650
DOI	10.1038/s42005-022-01030-x
英文摘要	In quantum materials, the electronic interaction and the electron-phonon coupling are, in general, two essential ingredients, the combined impact of which may drive exotic phases. Recently, an anomalously strong electron-electron attraction, likely mediated by phonons, has been proposed in one-dimensional copper-oxide chain Ba2-xSrxCuO3+delta. Yet, it is unclear how this strong near-neighbor attraction V influences the superconductivity pairing in the system. Here we perform accurate many-body calculations to study the extended Hubbard model with on-site Coulomb repulsion U > 0 and near-neighbor attraction V < 0 that could well describe the cuprate chain and likely other similar transition-metal materials with both strong correlations and lattice effects. We find a rich quantum phase diagram containing an intriguing Tomonaga-Luttinger liquid phase - besides the spin density wave and various phase separation phases - that can host dominant spin-triplet pairing correlations and divergent superconductive susceptibility. Upon doping, the spin-triplet superconducting regime can be further broadened, offering a feasible mechanism to realize p-wave superconductivity in realistic cuprate chains. Recent experiments have identified the underlying model of one-dimensional cuprate chains as the extended Hubbard model with attractive near-neighbor interactions. Here, the authors use many-body calculations to create an exact ground-state phase diagram of this model, demonstrating a rich diversity of exotic quantum states, and providing valuable guidance for realizing unconventional superconductivity in the system.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27864]
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.Clemson Univ, Dept Phys & Astron, Clemson, SC 29631 USA 2.Univ Chinese Acad Sci, Kavli Inst Theoret Sci, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Peoples R China 5.Univ Hong Kong, HKU UCAS Joint Inst Theoret & Computat Phys, Pokfulam Rd, Hong Kong, Peoples R China 6.SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA 7.Stanford Univ, Menlo Pk, CA 94025 USA 8.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Qu, Dai-Wei,Chen, Bin-Bin,Jiang, Hong-Chen,et al. Spin-triplet pairing induced by near-neighbor attraction in the extended Hubbard model for cuprate chain[J]. COMMUNICATIONS PHYSICS,2022,5(1):257.
APA	Qu, Dai-Wei,Chen, Bin-Bin,Jiang, Hong-Chen,Wang, Yao,&Li, Wei.(2022).Spin-triplet pairing induced by near-neighbor attraction in the extended Hubbard model for cuprate chain.COMMUNICATIONS PHYSICS,5(1),257.
MLA	Qu, Dai-Wei,et al."Spin-triplet pairing induced by near-neighbor attraction in the extended Hubbard model for cuprate chain".COMMUNICATIONS PHYSICS 5.1(2022):257.