Impurity effect on weak antilocalization in the topological insulator Bi2Te3.

@article{He2011ImpurityEO,
  title={Impurity effect on weak antilocalization in the topological insulator Bi2Te3.},
  author={Hong-Tao He and Gan Wang and Tao Zhang and Iam-Keong Sou and George K. L. Wong and Jian-nong Wang and Hai-Zhou Lu and Shun-qing Shen and Fu-chun Zhang},
  journal={Physical review letters},
  year={2011},
  volume={106 16},
  pages={
          166805
        }
}
We study the weak antilocalization (WAL) effect in topological insulator Bi(2)Te(3) thin films at low temperatures. The two-dimensional WAL effect associated with surface carriers is revealed in the tilted magnetic field dependence of magnetoconductance. Our data demonstrate that the observed WAL is robust against deposition of nonmagnetic Au impurities on the surface of the thin films, but it is quenched by the deposition of magnetic Fe impurities which destroy the π Berry phase of the… CONTINUE READING
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