g-wave pairing in BiS2 superconductors

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	g-wave pairing in BiS2 superconductors
	Wu, XX ; Yuan, J ; Liang, Y ; Fan, H ; Hu, JP
刊名	EPL
	2014
卷号	108 期号:2
ISSN号	0295-5075
通讯作者	Wu, XX (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	Recent angle-resolved photoemission spectroscopy (ARPES) experiments have suggested that BiS2-based superconductors are at very low electron doping. Using random phase approximation (RPA) and functional renormalization group (FRG) methods, we find that g-wave pairing symmetry belonging to the A(2g) irreducible representation is dominant at electron doping x < 0.25. The pairing symmetry is determined by inter-pocket nesting and orbital characters on the Fermi surfaces and is robust in a two-orbital model including both Hund's coupling J, and Hubbard-like Coulomb interactions U and U' with relatively small J (J <= 0.2U). With the increasing electron doping, the g-wave state competes with both the s-wave A(1g) and d-wave B-2g states and no pairing symmetry emerges dominantly. Copyright (C) EPLA, 2014
资助信息	973 program [2010CB922904, 2012CV821400]; National Science Foundation of China [NSFC-1190024, 11175248, 11104339]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59066]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wu, XX,Yuan, J,Liang, Y,et al. g-wave pairing in BiS2 superconductors[J]. EPL,2014,108(2).
APA	Wu, XX,Yuan, J,Liang, Y,Fan, H,&Hu, JP.(2014).g-wave pairing in BiS2 superconductors.EPL,108(2).
MLA	Wu, XX,et al."g-wave pairing in BiS2 superconductors".EPL 108.2(2014).