STM Imaging of Electronic Waves on the Surface of Bi2Te3: Topologically Protected Surface States and Hexagonal Warping Effects

被引：457

作者：

Alpichshev, Zhanybek ^{[1
,2
,3
]}

Analytis, J. G. ^{[1
,2
]}

Chu, J. -H. ^{[1
,2
,4
]}

Fisher, I. R. ^{[1
,2
,4
]}

Chen, Y. L. ^{[1
,2
]}

Shen, Z. X. ^{[1
,2
,3
,4
]}

Fang, A. ^{[2
,4
]}

Kapitulnik, A. ^{[1
,2
,3
,4
]}

机构：

[1] Stanford Inst Mat & Energy Sci, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[2] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA

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

[4] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.104.016401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Scanning tunneling spectroscopy studies on high-quality Bi2Te3 crystals exhibit perfect correspondence to angle-resolved photoemission spectroscopy data, hence enabling identification of different regimes measured in the local density of states (LDOS). Oscillations of LDOS near a step are analyzed. Within the main part of the surface band oscillations are strongly damped, supporting the hypothesis of topological protection. At higher energies, as the surface band becomes concave, oscillations appear, dispersing with a wave vector that may result from a hexagonal warping term.

引用

页数：4

共 17 条

[1] 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

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

CROMMIE, MF ;

LUTZ, CP ;

EIGLER, DM .

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

[3]

Friedel J., 1958, Il Nuovo Cimento, V7, P287, DOI [10.1007/BF02751483, DOI 10.1007/BF02751483, 10.1007/bf02751483]

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

Fu, Liang ;

Kane, C. L. .

PHYSICAL REVIEW B, 2007, 76 (04)

[5] Hexagonal Warping Effects in the Surface States of the Topological Insulator Bi2Te3 [J].

Fu, Liang .

PHYSICAL REVIEW LETTERS, 2009, 103 (26)

[6] DIRECT OBSERVATION OF STANDING-WAVE FORMATION AT SURFACE STEPS USING SCANNING TUNNELING SPECTROSCOPY [J].

HASEGAWA, Y ;

AVOURIS, P .

PHYSICAL REVIEW LETTERS, 1993, 71 (07) :1071-1074

[7] p-type Bi2Se3 for topological insulator and low-temperature thermoelectric applications [J].

Hor, Y. S. ;

Richardella, A. ;

Roushan, P. ;

Xia, Y. ;

Checkelsky, J. G. ;

Yazdani, A. ;

Hasan, M. Z. ;

Ong, N. P. ;

Cava, R. J. .

PHYSICAL REVIEW B, 2009, 79 (19)

[8] Observation of Unconventional Quantum Spin Textures in Topological Insulators [J].

Hsieh, D. ;

Xia, Y. ;

Wray, L. ;

Qian, D. ;

Pal, A. ;

Dil, J. H. ;

Osterwalder, J. ;

Meier, F. ;

Bihlmayer, G. ;

Kane, C. L. ;

Hor, Y. S. ;

Cava, R. J. ;

Hasan, M. Z. .

SCIENCE, 2009, 323 (5916) :919-922

[9]

Liu Q., private communication

[10] Role of spin in quasiparticle interference -: art. no. 196802 [J].

Pascual, JI ;

Bihlmayer, G ;

Koroteev, YM ;

Rust, HP ;

Ceballos, G ;

Hansmann, M ;

Horn, K ;

Chulkov, EV ;

Blügel, S ;

Echenique, PM ;

Hofmann, P .

PHYSICAL REVIEW LETTERS, 2004, 93 (19) :196802-1

← 1 2 →