Theory of quasiparticle interference on the surface of a strong topological insulator

被引：69

作者：

Guo, H. -M. ^{[1
,2
]}

Franz, M. ^{[1
]}

机构：

[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[2] Capital Normal Univ, Dept Phys, Beijing 100048, Peoples R China

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

PHASE;

D O I：

10.1103/PhysRevB.81.041102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electrons on the surface of a strong topological insulator, such as Bi2Te3 or Bi1-xSbx, form a topologically protected helical liquid whose excitation spectrum contains an odd number of massless Dirac fermions. A theoretical survey and classification is given of the universal features, observable by the ordinary and spinpolarized scanning tunneling spectroscopy, in the interference patterns resulting from the quasiparticle scattering by magnetic and nonmagnetic impurities in such a helical liquid. Our results confirm the absence of backscattering from nonmagnetic impurities observed in recent experiments and predict new interference features, uniquely characteristic of the helical liquid, when the scatterers are magnetic.

引用

页数：4

共 25 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] Wave-vector power spectrum of the local tunneling density of states:: Ripples in a d-wave sea -: art. no. 014508 [J].

Capriotti, L ;

Scalapino, DJ ;

Sedgewick, RD .

PHYSICAL REVIEW B, 2003, 68 (01)

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

CROMMIE, MF ;

LUTZ, CP ;

EIGLER, DM .

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

[4] Topological insulators in three dimensions [J].

Fu, Liang ;

Kane, C. L. ;

Mele, E. J. .

PHYSICAL REVIEW LETTERS, 2007, 98 (10)

[5] Superconducting proximity effect and Majorana fermions at the surface of a topological insulator [J].

Fu, Liang ;

Kane, C. L. .

PHYSICAL REVIEW LETTERS, 2008, 100 (09)

[6]

Gomes Kenjiro K., ARXIV09090921

[7] A topological Dirac insulator in a quantum spin Hall phase [J].

Hsieh, D. ;

Qian, D. ;

Wray, L. ;

Xia, Y. ;

Hor, Y. S. ;

Cava, R. J. ;

Hasan, M. Z. .

NATURE, 2008, 452 (7190) :970-U5

[8] Spectroscopic Fingerprint of Phase-Incoherent Superconductivity in the Underdoped Bi2Sr2CaCu2O8+δ [J].

Lee, Jhinhwan ;

Fujita, K. ;

Schmidt, A. R. ;

Kim, Chung Koo ;

Eisaki, H. ;

Uchida, S. ;

Davis, J. C. .

SCIENCE, 2009, 325 (5944) :1099-1103

[9] Quasiparticle interference on the surface of the topological insulator Bi2Te3 [J].

Lee, Wei-Cheng ;

Wu, Congjun ;

Arovas, Daniel P. ;

Zhang, Shou-Cheng .

PHYSICAL REVIEW B, 2009, 80 (24)

[10] Magnetic Impurities on the Surface of a Topological Insulator [J].

Liu, Qin ;

Liu, Chao-Xing ;

Xu, Cenke ;

Qi, Xiao-Liang ;

Zhang, Shou-Cheng .

PHYSICAL REVIEW LETTERS, 2009, 102 (15)

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