Engineered near-perfect backscattering on the surface of a topological insulator with nonmagnetic impurities

Article

关键词: SPIN TEXTURE;    BERRYS PHASE;    BI2SE3;   

DOI  :  10.1103/PhysRevB.90.241409

来源: SCIE

【 摘 要 】

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

【 授权许可】

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