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

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

2006-04-05

arxiv.org/abs/cond-mat/0604105v3

Physical Review B 74, 144515 (2006)

Physics

Condensed Matter

Superconductivity

14 pages, 7 figures; (v2) added refs; (v3) removed discussion on d-wave superconductors and moved it to cond-mat/0606001

Scientific paper

10.1103/PhysRevB.74.144515

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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