Oscillatory crossover from two-dimensional to three-dimensional topological insulators

被引：482

作者：

Liu, Chao-Xing ^{[1
,2
,3
]}

Zhang, HaiJun ^{[4
]}

Yan, Binghai ^{[5
]}

Qi, Xiao-Liang ^{[6
]}

Frauenheim, Thomas ^{[5
]}

Dai, Xi ^{[4
]}

Fang, Zhong ^{[4
]}

Zhang, Shou-Cheng ^{[6
]}

机构：

[1] Univ Wurzburg, Phys Inst EP3, D-97074 Wurzburg, Germany

[2] Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany

[3] Tsinghua Univ, Ctr Adv Study, Beijing 100084, Peoples R China

[4] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[5] Univ Bremen, Bremen Ctr Computat Mat Sci, D-28359 Bremen, Germany

[6] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 04期

关键词：

HGTE QUANTUM-WELLS; SINGLE DIRAC CONE; TRANSITION; SURFACE; BI2TE3; PHASE;

D O I：

10.1103/PhysRevB.81.041307

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the crossover regime from three-dimensional topological insulators Bi2Te3 and Bi2Se3 to two-dimensional topological insulators with quantum spin Hall effect when the layer thickness is reduced. Using both analytical models and first-principles calculations, we find that the crossover occurs in an oscillatory fashion as a function of the layer thickness, alternating between topologically trivial and nontrivial two-dimensional behavior.

引用

页数：4

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