Chirality Sensitive Effect on Surface States in Chiral p-Wave Superconductors

IR HANDLE Open Access

Abstract

We study the local density of states at the surface of a chiral p-wave superconductor in the presence of a weak magnetic field. As a result, the formation of low-energy Andreev bound states is either suppressed or enhanced by an applied magnetic field, depending on its orientation with respect to the chirality of the p-wave superconductor. Similarly, an Abrikosov vortex, which is situated not too far from the surface, leads to a zero-energy peak of the density of states, if its chirality is the same as that of the superconductor, and to a gap structure for the opposite case. We explain the underlying principle of this effect and propose a chirality sensitive test on unconventional superconductors.

Journal

  • PHYSICAL REVIEW Lett

    PHYSICAL REVIEW Lett 100 (17), 177002-177002, 2008-05

    American Physical Society

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