Momentum-resolved Landau-level spectroscopy of Dirac surface state in Bi2Se3

被引：233

作者：

Hanaguri, T. ^{[1
]}

Igarashi, K. ^{[2
]}

Kawamura, M. ^{[1
]}

Takagi, H. ^{[1
,3
]}

Sasagawa, T. ^{[2
]}

机构：

[1] RIKEN, Adv Sci Inst, Wako, Saitama 3510198, Japan

[2] Tokyo Inst Technol, Mat & Struct Lab, Kanagawa 2268503, Japan

[3] Univ Tokyo, Dept Adv Mat, Chiba 2778561, Japan

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 08期

关键词：

QUASI-PARTICLE INTERFERENCE; TOPOLOGICAL-INSULATOR; CONE;

D O I：

10.1103/PhysRevB.82.081305

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate Dirac fermions on the surface of the topological insulator Bi2Se3 using scanning tunneling spectroscopy. Landau levels (LLs) are observed in the tunneling spectra in a magnetic field. In contrast to LLs of conventional electrons, a field-independent LL appears at the Dirac point, which is a hallmark of Dirac fermions. A scaling analysis of LLs based on the Bohr-Sommerfeld quantization condition allowed us to determine the dispersion of the surface band. Near the Fermi energy, fine peaks mixed with LLs appear in the spectra, which may be responsible for the anomalous magnetofingerprint effect [J. G. Checkelsky et al., Phys. Rev. Lett. 103, 246601 (2009)].

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共 32 条

[1] STM Imaging of Electronic Waves on the Surface of Bi2Te3: Topologically Protected Surface States and Hexagonal Warping Effects [J].

Alpichshev, Zhanybek ;

Analytis, J. G. ;

Chu, J. -H. ;

Fisher, I. R. ;

Chen, Y. L. ;

Shen, Z. X. ;

Fang, A. ;

Kapitulnik, A. .

PHYSICAL REVIEW LETTERS, 2010, 104 (01)

[2] Bulk Fermi surface coexistence with Dirac surface state in Bi2Se3: A comparison of photoemission and Shubnikov-de Haas measurements [J].

Analytis, James G. ;

Chu, Jiun-Haw ;

Chen, Yulin ;

Corredor, Felipe ;

McDonald, Ross D. ;

Shen, Z. X. ;

Fisher, Ian R. .

PHYSICAL REVIEW B, 2010, 81 (20)

[3] Impurity-induced states in conventional and unconventional superconductors [J].

Balatsky, A. V. ;

Vekhter, I. ;

Zhu, Jian-Xin .

REVIEWS OF MODERN PHYSICS, 2006, 78 (02) :373-433

[4] Quantum spin Hall effect and topological phase transition in HgTe quantum wells [J].

Bernevig, B. Andrei ;

Hughes, Taylor L. ;

Zhang, Shou-Cheng .

SCIENCE, 2006, 314 (5806) :1757-1761

[5] The electronic properties of graphene [J].

Castro Neto, A. H. ;

Guinea, F. ;

Peres, N. M. R. ;

Novoselov, K. S. ;

Geim, A. K. .

REVIEWS OF MODERN PHYSICS, 2009, 81 (01) :109-162

[6] Quantum Interference in Macroscopic Crystals of Nonmetallic Bi2Se3 [J].

Checkelsky, J. G. ;

Hor, Y. S. ;

Liu, M. -H. ;

Qu, D. -X. ;

Cava, R. J. ;

Ong, N. P. .

PHYSICAL REVIEW LETTERS, 2009, 103 (24)

[7] Experimental Realization of a Three-Dimensional Topological Insulator, Bi2Te3 [J].

Chen, Y. L. ;

Analytis, J. G. ;

Chu, J. -H. ;

Liu, Z. K. ;

Mo, S. -K. ;

Qi, X. L. ;

Zhang, H. J. ;

Lu, D. H. ;

Dai, X. ;

Fang, Z. ;

Zhang, S. C. ;

Fisher, I. R. ;

Hussain, Z. ;

Shen, Z. -X. .

SCIENCE, 2009, 325 (5937) :178-181

[8]

CHENG P, ARXIV10013220

[9] IMAGING STANDING WAVES IN A 2-DIMENSIONAL ELECTRON-GAS [J].

CROMMIE, MF ;

LUTZ, CP ;

EIGLER, DM .

NATURE, 1993, 363 (6429) :524-527

[10] Topological insulators with inversion symmetry [J].

Fu, Liang ;

Kane, C. L. .

PHYSICAL REVIEW B, 2007, 76 (04)

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