Engineered near-perfect backscattering on the surface of a topological insulator with nonmagnetic impurities
2014 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 90, no 24, 241409- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2014. Vol. 90, no 24, 241409- p.
IdentifiersURN: urn:nbn:se:su:diva-113122DOI: 10.1103/PhysRevB.90.241409ISI: 000346047300002OAI: oai:DiVA.org:su-113122DiVA: diva2:790694