Topological crystalline insulator PbxSn1-xTe thin films on SrTiO3 (001) with tunable Fermi levels

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	Topological crystalline insulator PbxSn1-xTe thin films on SrTiO3 (001) with tunable Fermi levels
	Guo, H ; Yan, CH ; Liu, JW ; Wang, ZY ; Wu, R ; Zhang, ZD ; Wang, LL ; He, K ; Ma, XC ; Ji, SH ; Duan, WH ; Chen, X ; Xue, QK
刊名	APL MATERIALS
	2014
卷号	2 期号:5
ISSN号	2166-532X
通讯作者	Guo, H (reprint author), Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China.
中文摘要	In this letter, we report a systematic study of topological crystalline insulator PbxSn1-xTe (0 < x < 1) thin films grown by molecular beam epitaxy on SrTiO3(001). Two domains of PbxSn1-xTe thin films with intersecting angle of alpha approximate to 45 degrees. were confirmed by reflection high energy diffraction, scanning tunneling microscopy, and angle-resolved photoemission spectroscopy (ARPES). ARPES study of PbxSn-1Te thin films demonstrated that the Fermi level of PbTe could be tuned by altering the temperature of substrate whereas SnTe cannot. An M-shaped valance band structure was observed only in SnTe but PbTe is in a topological trivial state with a large gap. In addition, co-evaporation of SnTe and PbTe results in an equivalent variation of Pb concentration as well as the Fermi level of PbxSn1-xTe thin films. (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
资助信息	NSFC [11025419, 51331006]; MOST [2011CB921904, 2011CB921901]
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/311004/58860]
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	Guo, H,Yan, CH,Liu, JW,et al. Topological crystalline insulator PbxSn1-xTe thin films on SrTiO3 (001) with tunable Fermi levels[J]. APL MATERIALS,2014,2(5).
APA	Guo, H.,Yan, CH.,Liu, JW.,Wang, ZY.,Wu, R.,...&Xue, QK.(2014).Topological crystalline insulator PbxSn1-xTe thin films on SrTiO3 (001) with tunable Fermi levels.APL MATERIALS,2(5).
MLA	Guo, H,et al."Topological crystalline insulator PbxSn1-xTe thin films on SrTiO3 (001) with tunable Fermi levels".APL MATERIALS 2.5(2014).