Termination-dependent topological surface states of the natural superlattice phase Bi4Se3

被引：55

作者：

Gibson, Q. D. ^{[1
]}

Schoop, L. M. ^{[1
]}

Weber, A. P. ^{[2
,3
]}

Ji, Huiwen ^{[1
]}

Nadj-Perge, S. ^{[4
]}

Drozdov, I. K. ^{[4
]}

Beidenkopf, H. ^{[4
]}

Sadowski, J. T. ^{[5
]}

Fedorov, A. ^{[6
]}

Yazdani, A. ^{[4
]}

Valla, T. ^{[7
]}

Cava, R. J. ^{[1
]}

机构：

[1] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

[2] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA

[3] Univ Missouri, Dept Phys & Astron, Kansas City, MO 64110 USA

[4] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[5] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA

[6] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[7] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW B | 2013年 / 88卷 / 08期

基金：

美国国家科学基金会;

关键词：

DIRAC CONE; INSULATOR; BI2TE3;

D O I：

10.1103/PhysRevB.88.081108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We describe the topological surface states of Bi4Se3, a compound in the infinitely adaptive Bi-2-Bi2Se3 natural superlattice phase series, determined by a combination of experimental and theoretical methods. Two observable cleavage surfaces, terminating at Bi or Se, are characterized by angle-resolved photoelectron spectroscopy and scanning tunneling microscopy, and modeled by ab initio density functional theory calculations. Topological surface states are observed on both surfaces, but with markedly different dispersions and Kramers point energies. Bi4Se3 therefore represents the only known compound with different topological states on differently terminated, easily distinguished and stable surfaces.

引用

页数：5

共 27 条

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