Half-Heusler Compounds as a New Class of Three-Dimensional Topological Insulators

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	Half-Heusler Compounds as a New Class of Three-Dimensional Topological Insulators
	Xiao, D ; Yao, YG ; Feng, WX ; Wen, J ; Zhu, WG ; Chen, XQ ; Stocks, GM ; Zhang, ZY
刊名	PHYSICAL REVIEW LETTERS
	2010
卷号	105 期号:9
关键词	HGTE QUANTUM-WELLS TRANSPORT-PROPERTIES PHASE POLARIZATION TRANSITION LABIPT BI2TE3
ISSN号	0031-9007
通讯作者	Xiao, D: Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
中文摘要	Using first-principles calculations within density functional theory, we explore the feasibility of converting ternary half-Heusler compounds into a new class of three-dimensional topological insulators (3DTI). We demonstrate that the electronic structure of unstrained LaPtBi as a prototype system exhibits a distinct band-inversion feature. The 3DTI phase is realized by applying a uniaxial strain along the [001] direction, which opens a band gap while preserving the inverted band order. A definitive proof of the strained LaPtBi as a 3DTI is provided by directly calculating the topological Z(2) invariants in systems without inversion symmetry. We discuss the implications of the present study to other half-Heusler compounds as 3DTI, which, together with the magnetic and superconducting properties of these materials, may provide a rich platform for novel quantum phenomena.
收录类别	SCI
资助信息	Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy; NSF of China [10674163, 10974231]; MOST of China [2006CB921300, 2007CB925000]; Welch Foundation [F-1255]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/39041]
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	Xiao, D,Yao, YG,Feng, WX,et al. Half-Heusler Compounds as a New Class of Three-Dimensional Topological Insulators[J]. PHYSICAL REVIEW LETTERS,2010,105(9).
APA	Xiao, D.,Yao, YG.,Feng, WX.,Wen, J.,Zhu, WG.,...&Zhang, ZY.(2010).Half-Heusler Compounds as a New Class of Three-Dimensional Topological Insulators.PHYSICAL REVIEW LETTERS,105(9).
MLA	Xiao, D,et al."Half-Heusler Compounds as a New Class of Three-Dimensional Topological Insulators".PHYSICAL REVIEW LETTERS 105.9(2010).