Quasiparticle Interference on the Surface of the Topological Insulator Bi$_2$Te$_3$

Wei-Cheng Lee; Congjun Wu; Daniel P. Arovas; Shou-Cheng Zhang

doi:10.1103/PhysRevB.80.245439

Quasiparticle Interference on the Surface of the Topological Insulator Bi$_2$Te$_3$

Mesoscale and Nanoscale Physics 2010-09-15 v4

Authors: Wei-Cheng Lee , Congjun Wu , Daniel P. Arovas , Shou-Cheng Zhang

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Abstract

The quasiparticle interference of the spectroscopic imaging scanning tunneling microscopy has been investigated for the surface states of the large gap topological insulator Bi $_2$ Te $_3$ through the T-matrix formalism. Both the scalar potential scattering and the spin-orbit scattering on the warped hexagonal isoenergy contour are considered. While backscatterings are forbidden by time-reversal symmetry, other scatterings are allowed and exhibit strong dependence on the spin configurations of the eigenfunctions at k points over the isoenergy contour. The characteristic scattering wavevectors found in our analysis agree well with recent experiment results.

Keywords

quasiparticle interference topological insulator Bi2Te3 scanning tunneling microscopy T-matrix formalism spin-orbit scattering backscattering

Cite

@article{arxiv.0910.1668,
  title  = {Quasiparticle Interference on the Surface of the Topological Insulator Bi$_2$Te$_3$},
  author = {Wei-Cheng Lee and Congjun Wu and Daniel P. Arovas and Shou-Cheng Zhang},
  journal= {arXiv preprint arXiv:0910.1668},
  year   = {2010}
}

Comments

5 pages, 2 figures, Some typos are corrected

Quasiparticle Interference on the Surface of the Topological Insulator Bi$_2$Te$_3$

Abstract

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