Effects of nonmagnetic scatterers on the local density of states around a vortex in s-wave superconductors

P. Miranović, M. Ichioka, K. Machida

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    47 Citations (Scopus)

    Abstract

    We study the effect of nonmagnetic impurities on the local density of states (LDOS) in the mixed state of s-wave superconductors. The quasiclassical equations of superconductivity in the vortex state are solved self-consistently to show how the LDOS evolves with impurity concentration. The spatially averaged zero-energy LDOS is a linear function of magnetic induction in low fields, N(E=0)=α(τ)B/Hc2, for all impurity concentrations. The coefficient α depends weakly on the electron mean-free path. We evaluate numerically the differential conductance and spatial profiles of zero-energy LDOS, which can help in extracting the mean-free path from the measured LDOS.

    Original languageEnglish
    Article number104510
    Pages (from-to)104510-1-104510-7
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume70
    Issue number10
    DOIs
    Publication statusPublished - Sep 2004

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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