Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb1-xSnxTe(111) Films

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	Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb1-xSnxTe(111) Films
	C. H. Yan; J. W. Liu; Y. Y. Zang; J. F. Wang; Z. Y. Wang; P. Wang; Z. D. Zhang; L. L. Wang; X. C. Ma; S. H. Ji; K. He; L. Fu; W. H. Duan; Q. K. Xue; X. Chen
	2014
发表期刊	Physical Review Letters
ISSN	0031-9007
卷号	112 期号:18
摘要	The surface of a topological crystalline insulator (TCI) carries an even number of Dirac cones protected by crystalline symmetry. We epitaxially grew high-quality Pb1-xSnxTe(111) films and investigated the TCI phase by in situ angle-resolved photoemission spectroscopy. Pb1-xSnxTe(111) films undergo a topological phase transition from a trivial insulator to TCI via increasing the Sn/Pb ratio, accompanied by a crossover from n-type to p-type doping. In addition, a hybridization gap is opened in the surface states when the thickness of the film is reduced to the two-dimensional limit. The work demonstrates an approach to manipulating the topological properties of TCI, which is of importance for future fundamental research and applications based on TCI.
部门归属	[yan, chenhui ; liu, junwei ; zang, yunyi ; wang, jianfeng ; wang, zhenyu ; wang, peng ; wang, lili ; ma, xucun ; ji, shuaihua ; he, ke ; duan, wenhui ; xue, qi-kun ; chen, xi] tsinghua univ, dept phys, state key lab low dimens quantum phys, beijing 100084, peoples r china. [yan, chenhui ; liu, junwei ; zang, yunyi ; wang, jianfeng ; wang, zhenyu ; wang, peng ; wang, lili ; ma, xucun ; ji, shuaihua ; he, ke ; duan, wenhui ; xue, qi-kun ; chen, xi] collaborat innovat ctr quantum matter, beijing 100084, peoples r china. [zhang, zhi-dong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [fu, liang] mit, dept phys, cambridge, ma 02139 usa. ; yan, ch (reprint author), tsinghua univ, dept phys, state key lab low dimens quantum phys, beijing 100084, peoples r china. ; qkxue@mail.tsinghua.edu.cn ; xc@mail.tsinghua.edu.cn
关键词	Crystalline Insulator Snte Thin-films Pbte Heterostructures Bi2se3 Growth Limit
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72949
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. H. Yan,J. W. Liu,Y. Y. Zang,et al. Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb1-xSnxTe(111) Films[J]. Physical Review Letters,2014,112(18).
APA	C. H. Yan.,J. W. Liu.,Y. Y. Zang.,J. F. Wang.,Z. Y. Wang.,...&X. Chen.(2014).Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb1-xSnxTe(111) Films.Physical Review Letters,112(18).
MLA	C. H. Yan,et al."Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb1-xSnxTe(111) Films".Physical Review Letters 112.18(2014).