Sublattice effect on topological surface states in complex (SnTe)n>1(Bi2Te3)m=1 compounds

被引：15
作者：
Eremeev, S. V. [1 ,2 ,3 ]
Menshchikova, T. V. [2 ]
Silkin, I. V. [2 ]
Vergniory, M. G. [4 ]
Echenique, P. M. [4 ,5 ,6 ]
Chulkov, E. V. [2 ,3 ,4 ,5 ,6 ]
机构：
[1] Inst Strength Phys & Mat Sci, Tomsk 634021, Russia
[2] Tomsk State Univ, Tomsk 634050, Russia
[3] St Petersburg State Univ, St Petersburg 198504, Russia
[4] DIPC, San Sebastian 20018, Basque Country, Spain
[5] Univ Basque Country, Ctr Fis Mat CFM MPC, Dept Fis Mat, San Sebastian 20080, Basque Country, Spain
[6] Univ Basque Country, CSIC, Ctr Mixto, San Sebastian 20080, Basque Country, Spain
来源：
PHYSICAL REVIEW B | 2015年 / 91卷 / 24期
基金：
俄罗斯基础研究基金会;
关键词：
AUGMENTED-WAVE METHOD; SINGLE DIRAC CONE; EXPERIMENTAL REALIZATION; INSULATORS; BI2SE3; METALS; BI2TE3; SNTE;
D O I：
10.1103/PhysRevB.91.245145
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An exotic type of topological spin-helical surface state was found in layered van der Waals bonded (SnTe)(n=2,3)(Bi2Te3)(m=1) compounds which comprise two covalently bonded band inverted sublattices, SnTe and Bi2Te3, within a building block. This topological state demonstrates unusual dispersion within the band gap. The dispersion of the surface state has two linear sections of different slope with a shoulder feature between them. Such a dispersion of the topological surface state enables an effective switch of the velocity of topological carriers by means of applying an external electric field.
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页数：5
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