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arXiv · 1410.2842

Engineered Near-Perfect Back-Scattering on Surface of Topological Insulator with Non-Magnetic Impurities

J. Fransson·A. M. Black-Schaffer·A. V. Balatsky
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Abstract

We show how to engineer enhanced skew scattering and gap-like opening in the surface state of three-dimensional topological insulators using only non-magnetic impurities. Enhanced skew scattering off non-magnetic impurities is obtained as a finite size effect of the scattering potential. Intimately related to the generated skew-scattering is the emergence of a gap-like density of electron states locally around the impurities and surrounded by sharp resonances, with an extended energy gap appearing in engineered impurity structures.

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J. Fransson, A. M. Black-Schaffer, A. V. Balatsky. 2014-10-10. Engineered Near-Perfect Back-Scattering on Surface of Topological Insulator with Non-Magnetic Impurities. https://doi.org/10.1103/physrevb.90.241409

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