The electron pairing of KxFe2-ySe2

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	The electron pairing of KxFe2-ySe2
	Xiang, T
刊名	EPL
	2011
卷号	93 期号:5 页码:57003
关键词	RENORMALIZATION-GROUP SUPERCONDUCTIVITY
ISSN号	0295-5075
通讯作者	Wang, F (reprint author), MIT, Dept Phys, Cambridge, MA 02139 USA.
英文摘要	We studied the pairing instabilities in KxFe2-ySe2 using a two-stage functional renormalization group (FRG) method. Our results suggest the leading and subleading pairing symmetries are nodeless d(x2-y2) and nodal extended s, respectively. In addition, despite having no Fermi surfaces we find the buried hole bands make important contributions to the final effective interaction. From the bandstructure, spin susceptibility and the FRG results we conclude that the low-energy effective interaction in KxFe2-ySe2 is well described by a J(1)-J(2) model with dominant nearest-neighbor antiferromagnetic interaction J(1) (at least as far as the superconducting pairing is concerned). In the end we briefly mention several obvious experiments to test whether the pairing symmetry is indeed d(x2-y2). Copyright (c) EPLA, 2011
学科主题	Physics
收录类别	SCI
资助信息	DOE [DE-AC02-05CH11231]; NSFC [10704008]; National Natural Science Foundation of China; MOST, China
原文出处	http://dx.doi.org/10.1209/0295-5075/93/57003
语种	英语
WOS记录号	WOS:000288322900015
公开日期	2013-05-17
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14400]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Xiang, T. The electron pairing of KxFe2-ySe2[J]. EPL,2011,93(5):57003.
APA	Xiang, T.(2011).The electron pairing of KxFe2-ySe2.EPL,93(5),57003.
MLA	Xiang, T."The electron pairing of KxFe2-ySe2".EPL 93.5(2011):57003.