Topological pz-wave nodal-line superconductivity with flat surface bands in the AH(x)Cr(3)As(3) (A= Na, K, Rb, Cs) superconductors

doi:10.1209/0295-5075/ac6622

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	Topological pz-wave nodal-line superconductivity with flat surface bands in the AH(x)Cr(3)As(3) (A= Na, K, Rb, Cs) superconductors
	Hao, Juan-Juan ; Zhang, Ming ; Wu, Xian-Xin ; Yang, Fan 3
刊名	EPL
	2022
卷号	138 期号:6 页码:66001
关键词	K2CR3AS3
ISSN号	0295-5075
DOI	10.1209/0295-5075/ac6622
英文摘要	We study the pairing symmetry and the topological properties of the hydrogen-doped ACr(3)As(3) superconductors. Based on our first-principle band structure with spin-orbit coupling (SOC), we construct a tight-binding model including the on-site SOC terms, equipped with the multi-orbital Hubbard interactions. Then using the random-phase-approximation (RPA) approach, we calculate the pairing phase diagram of this model. Our RPA results yield the triplet p(z)-wave pairing in the (up down arrow +down arrow up arrow) spin channel to be the leading pairing symmetry all over the experiment relevant hydrogen-doping regimes. This pairing state belongs to the spin-U(1)symmetry-protected time-reversal-invariant topological nodal-line superconductivity. Determined by the momentum-dependent topological invariant Z(kx, ky), the whole (001) surface Brillouin zone is covered with topological flat bands with different regimes covered with different numbers of flat surface bands, which can be detected by the scanning tunneling microscope experiments. Copyright (C) 2022 The author(s)
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/311006/27894]
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, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.[Hao, Juan-Juan 3.Zhang, Ming 4.Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China 5.Max Planck Inst Festkorperforsch, Heisenbergstr 1, D-70569 Stuttgart, Germany
推荐引用方式 GB/T 7714	Hao, Juan-Juan,Zhang, Ming,Wu, Xian-Xin,et al. Topological pz-wave nodal-line superconductivity with flat surface bands in the AH(x)Cr(3)As(3) (A= Na, K, Rb, Cs) superconductors[J]. EPL,2022,138(6):66001.
APA	Hao, Juan-Juan,Zhang, Ming,Wu, Xian-Xin,&Yang, Fan.(2022).Topological pz-wave nodal-line superconductivity with flat surface bands in the AH(x)Cr(3)As(3) (A= Na, K, Rb, Cs) superconductors.EPL,138(6),66001.
MLA	Hao, Juan-Juan,et al."Topological pz-wave nodal-line superconductivity with flat surface bands in the AH(x)Cr(3)As(3) (A= Na, K, Rb, Cs) superconductors".EPL 138.6(2022):66001.