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

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.

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

References in corpus (5)

• "Deconfined" quantum critical points
• Quantum criticality beyond the Landau-Ginzburg-Wilson paradigm
• Putting competing orders in their place near the Mott transition
• Competing orders II: the doped quantum dimer model
• Detecting the quantum zero-point motion of vortices in the cuprate superconductors

Cited by in corpus (3)

• Splitting of Majorana modes due to intervortex tunneling in a p + ip superconductor
• Evidence of zero point fluctuation of vortices in a very weakly pinned a-MoGe thin film
• Low frequency electrodynamics in the mixed state of superconducting NbN and a-MoGe films using two-coil mutual inductance technique