Single-Dirac-Cone Topological Surface States in the TlBiSe2 Class of Topological Semiconductors

被引：176

作者：

Lin, Hsin ^{[1
]}

Markiewicz, R. S. ^{[1
]}

Wray, L. A. ^{[2
,3
]}

Fu, L. ^{[4
]}

Hasan, M. Z. ^{[2
,3
]}

Bansil, A. ^{[1
]}

机构：

[1] Northeastern Univ, Dept Phys, Boston, MA 02115 USA

[2] Princeton Univ, Joseph Henry Labs Phys, Princeton, NJ 08544 USA

[3] Princeton Univ, Princeton Ctr Complex Mat, Princeton, NJ 08544 USA

[4] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 03期

关键词：

INSULATORS; TLBITE2; REALIZATION; BI2TE3; PHASE;

D O I：

10.1103/PhysRevLett.105.036404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate several strong spin-orbit coupling ternary chalcogenides related to the (Pb,Sn) Te series of compounds. Our first-principles calculations predict the low-temperature rhombohedral ordered phase in TlBiTe2, TlBiSe2, and TlSbX2 (X = Te, Se, S) to be topologically nontrivial. We identify the specific surface termination that realizes the single Dirac cone through first-principles surface state computations. This termination minimizes effects of dangling bonds, making it favorable for photoemission experiments. In addition, our analysis predicts that thin films of these materials could harbor novel 2D quantum spin Hall states, and support odd-parity topological superconductivity.

引用

页数：4

共 28 条

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