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Impurity effect on weak antilocalization in the topological insulator Bi2Te3

Hong-Tao He1, Gan Wang, Tao Zhang

  • 1Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.

Physical Review Letters
|May 24, 2011
PubMed
Summary

Weak antilocalization in topological insulator Bi(2)Te(3) films is robust against nonmagnetic impurities but quenched by magnetic ones. Magnetic impurities destroy the π Berry phase, causing a class crossover in surface states.

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