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arXiv · 1709.01444

Self-consistent calculation of the flux-flow conductivity in diffusive superconductors

A. Vargunin·M. A. Silaev
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Abstract

In the framework of Keldysh-Usadel kinetic theory, we study the temperature dependence of flux-flow conductivity (FFC) in diffusive superconductors. By using self-consistent vortex solutions we find the exact values of dimensionless parameters that determine the diffusion-controlled FFC both in the limit of the low temperatures and close to the critical one. Taking into account the electron-phonon scattering we study the transition between flux-flow regimes controlled either by the diffusion or the inelastic relaxation of non-equilibrium quasiparticles. We demonstrate that the inelastic electron-phonon relaxation leads to the strong suppression of FFC as compared to the previous estimates making it possible to obtain the numerical agreement with experimental results.

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A. Vargunin, M. A. Silaev. 2017-09-05. Self-consistent calculation of the flux-flow conductivity in diffusive superconductors. https://doi.org/10.1103/physrevb.96.214507

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