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

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.

arXiv comment5 pages, 4 figures, now also with references

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Cited by in corpus (10)

• Magnon Dirac materials
• Filling of magnetic-impurity-induced gap in topological insulators by potential scattering
• Electrical resistance of individual defects at a topological insulator surface
• Impurity scattering on the surface of topological insulator thin films
• Inelastic-impurity-scattering-induced spin texture and topological transitions in surface electron waves
• Bound states and controllable currents on Topological Insulator surfaces with extended magnetic defects
• Dynamics of impurity in the environment of Dirac fermions
• Time-dependent potential impurity in topological insulator
• Distinct quasiparticle interference patterns for surface impurity scattering on various Weyl semimetals
• Time-reversal invariant resonant backscattering on a topological insulator surface driven by a time-periodic gate voltage