Topological Crystalline Kondo Insulator in Mixed Valence Ytterbium Borides

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	Topological Crystalline Kondo Insulator in Mixed Valence Ytterbium Borides
	Weng, HM ; Zhao, JZ ; Wang, ZJ ; Fang, Z ; Dai, X
刊名	PHYSICAL REVIEW LETTERS
	2014
卷号	112 期号:1
ISSN号	0031-9007
通讯作者	Weng, HM (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	The electronic structures of two mixed valence insulators YbB6 and YbB12 are studied by using the local density approximation supplemented with the Gutzwiller method and dynamic mean field theory. YbB6 is found to be a moderately correlated Z(2) topological insulator, similar to SmB6 but having much larger bulk band gap. Notably, YbB12 is revealed to be in a new novel quantum state, strongly correlated topological crystalline Kondo insulator, which is characterized by its nonzero mirror Chern number. The surface calculations find an odd (three) and an even (four) number of Dirac cones for YbB6 and YbB12, respectively.
资助信息	NSF of China; 973 program of China [2011CBA00108, 2013CBP21700]
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/311004/59596]
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	Weng, HM,Zhao, JZ,Wang, ZJ,et al. Topological Crystalline Kondo Insulator in Mixed Valence Ytterbium Borides[J]. PHYSICAL REVIEW LETTERS,2014,112(1).
APA	Weng, HM,Zhao, JZ,Wang, ZJ,Fang, Z,&Dai, X.(2014).Topological Crystalline Kondo Insulator in Mixed Valence Ytterbium Borides.PHYSICAL REVIEW LETTERS,112(1).
MLA	Weng, HM,et al."Topological Crystalline Kondo Insulator in Mixed Valence Ytterbium Borides".PHYSICAL REVIEW LETTERS 112.1(2014).