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Influence of the quantum zero-point motion of a vortex on the electronic spectra of s-wave superconductors

Lorenz Bartosch·Subir Sachdev
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Abstract

We compute the influence of the quantum zero-point motion of a vortex on the electronic quasiparticle spectra of s-wave superconductors. The vortex is assumed to be pinned by a harmonic potential, and its coupling to the quasiparticles is computed in the framework of BCS theory. Near the core of the vortex, the motion leads to a shift of spectral weight away from the chemical potential, and thereby reduces the zero bias conductance peak; additional structure at the frequency of the harmonic trap is also observed.

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Lorenz Bartosch, Subir Sachdev. 2006-07-22. Influence of the quantum zero-point motion of a vortex on the electronic spectra of s-wave superconductors. https://doi.org/10.1103/physrevb.74.144515

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