Topological Aspect and Quantum Magnetoresistance of beta-Ag2Te

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Topological Aspect and Quantum Magnetoresistance of beta-Ag2Te
	Zhang, W ; Yu, R ; Feng, WX ; Yao, YG ; Weng, HM ; Dai, X ; Fang, Z
刊名	PHYSICAL REVIEW LETTERS
	2011
卷号	106 期号:15
关键词	SINGLE DIRAC CONE SILVER CHALCOGENIDES ELECTRONIC-STRUCTURE INSULATORS REALIZATION TRANSITION SURFACE BI2TE3 WELLS PHASE
ISSN号	0031-9007
通讯作者	Zhang, W (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	To explain the unusual nonsaturating linear magnetoresistance observed in silver chalcogenides, the quantum scenario has been proposed based on the assumption of gapless linear energy spectrum. Here we show, by first principles calculations, that beta-Ag2Te with distorted antifluorite structure is in fact a topological insulator with gapless Dirac-type surface states. The characteristic feature of this new binary topological insulator is the highly anisotropic Dirac cone, in contrast with known examples, such as Bi2Te3 and Bi2Se3. The Fermi velocity varies an order of magnitude by rotating the crystal axis.
收录类别	SCI
资助信息	NSF of China; 973 program of China [2007CB925000]
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/45971]
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	Zhang, W,Yu, R,Feng, WX,et al. Topological Aspect and Quantum Magnetoresistance of beta-Ag2Te[J]. PHYSICAL REVIEW LETTERS,2011,106(15).
APA	Zhang, W.,Yu, R.,Feng, WX.,Yao, YG.,Weng, HM.,...&Fang, Z.(2011).Topological Aspect and Quantum Magnetoresistance of beta-Ag2Te.PHYSICAL REVIEW LETTERS,106(15).
MLA	Zhang, W,et al."Topological Aspect and Quantum Magnetoresistance of beta-Ag2Te".PHYSICAL REVIEW LETTERS 106.15(2011).