Possible Superconductivity with a Bogoliubov Fermi Surface in a Lightly Doped Kagome U(1) Spin Liquid

doi:10.1103/PhysRevLett.127.187003

	Possible Superconductivity with a Bogoliubov Fermi Surface in a Lightly Doped Kagome U(1) Spin Liquid
	Jiang, Yi-Fan1,2,3 ; Yao, Hong 4,5,6; Yang, Fan 7
	2021-10-26
发表期刊	PHYSICAL REVIEW LETTERS
ISSN	0031-9007
EISSN	1079-7114
卷号	127 期号:18
DOI	10.1103/PhysRevLett.127.187003
摘要	Whether the doped t-J model on the Kagome lattice supports exotic superconductivity has not been decisively answered. In this Letter, we propose a new class of variational states for this model and perform a large-scale variational Monte Carlo simulation on it. The proposed variational states are parameterized by the SU(2)-gauge rotation angles, as the SU(2)-gauge structure hidden in the Gutzwiller-projected mean-field Ansatz for the undoped model is broken upon doping. These variational doped states smoothly connect to the previously studied U(1) pi-flux or 0-flux states, and energy minimization among them yields a chiral noncentrosymmetric nematic superconducting state with 2 x 2-enlarged unit cell. Moreover, this pair density wave state possesses a finite Fermi surface for the Bogoliubov quasiparticles. We further study experimentally relevant properties of this intriguing pairing state.
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收录类别	SCIE ; EI
语种	英语
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000712052100001
出版者	AMER PHYSICAL SOC
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/128588
专题	物质科学与技术学院_PI研究组_蒋易凡组
通讯作者	Yao, Hong; Yang, Fan
作者单位	1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China; 2.SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA; 3.Stanford Univ, Menlo Pk, CA 94025 USA; 4.Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R China; 5.Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China; 6.Stanford Univ, Dept Phys, Stanford, CA 94305 USA; 7.Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China
第一作者单位	物质科学与技术学院
第一作者的第一单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Jiang, Yi-Fan,Yao, Hong,Yang, Fan. Possible Superconductivity with a Bogoliubov Fermi Surface in a Lightly Doped Kagome U(1) Spin Liquid[J]. PHYSICAL REVIEW LETTERS,2021,127(18).
APA	Jiang, Yi-Fan,Yao, Hong,&Yang, Fan.(2021).Possible Superconductivity with a Bogoliubov Fermi Surface in a Lightly Doped Kagome U(1) Spin Liquid.PHYSICAL REVIEW LETTERS,127(18).
MLA	Jiang, Yi-Fan,et al."Possible Superconductivity with a Bogoliubov Fermi Surface in a Lightly Doped Kagome U(1) Spin Liquid".PHYSICAL REVIEW LETTERS 127.18(2021).