Akademska digitalna zbirka SLovenije - logo
E-viri
Celotno besedilo
Odprti dostop
  • Parente, V; Lucignano, P; Vitale, P; Tagliacozzo, A; Guinea, F

    arXiv.org, 11/2010
    Paper, Journal Article

    We study the surface resistivity of a three-dimensional topological insulator when the boundaries exhibit a non trivial curvature. We obtain an analytical solution for a spherical topological insulator, and we show that a non trivial quantum spin connection emerges from the three dimensional band structure. We analyze the effect of the spin connection on the scattering by a bump on a flat surface. Quantum effects induced by the geometry lead to resonances when the electron wavelength is comparable to the size of the bump.