Hexagonally Deformed Fermi Surface of the 3D Topological Insulator Bi2Se3

被引：234

作者：

Kuroda, K. ^{[1
]}

Arita, M. ^{[2
]}

Miyamoto, K. ^{[2
]}

Ye, M. ^{[1
]}

Jiang, J. ^{[1
]}

Kimura, A. ^{[1
]}

Krasovskii, E. E. ^{[3
,4
,5
]}

Chulkov, E. V. ^{[3
,4
,6
]}

Iwasawa, H. ^{[2
]}

Okuda, T. ^{[2
]}

Shimada, K. ^{[2
]}

Ueda, Y. ^{[7
]}

Namatame, H. ^{[2
]}

Taniguchi, M. ^{[1
,2
]}

机构：

[1] Hiroshima Univ, Grad Sch Sci, Higashihiroshima 7398526, Japan

[2] Hiroshima Univ, Hiroshima Synchrotron Radiat Ctr, Higashihiroshima 7390046, Japan

[3] Univ Basque Country, Fac Ciencias Quim, Dept Fis Mat, Euskal Herriko Unibertsitatea, San Sebastian 20080, Basque Country, Spain

[4] DIPC, San Sebastian 20018, Basque Country, Spain

[5] Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Spain

[6] Univ Basque Country, CSIC, Ctr Mixto, CFM,MPC, San Sebastian 20018, Spain

[7] Kure Natl Coll Technol, Kure 7378506, Japan

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 07期

关键词：

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

D O I：

10.1103/PhysRevLett.105.076802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A hexagonal deformation of the Fermi surface of Bi2Se3 has been for the first time observed by angle-resolved photoemission spectroscopy. This is in contrast to the general belief that Bi2Se3 possesses an ideal Dirac cone. The hexagonal shape is found to disappear near the Dirac node, which would protect the surface state electrons from backscattering. It is also demonstrated that the Fermi energy of naturally electron-doped Bi2Se3 can be tuned by 1% Mg doping in order to realize the quantum topological transport.

引用

页数：4

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