A1 Journal article (refereed)
Self-consistent calculation of the flux-flow conductivity in diffusive superconductors (2017)

Varguinin, A., & Silaev, M. (2017). Self-consistent calculation of the flux-flow conductivity in diffusive superconductors. Physical Review B, 96(21), Article 214507. https://doi.org/10.1103/PhysRevB.96.214507

JYU authors or editors

Silaev, Mikhail

Publication details

All authors or editors: Varguinin, A.; Silaev, Mikhail

Journal or series: Physical Review B

ISSN: 2469-9950

eISSN: 2469-9969

Publication year: 2017

Volume: 96

Issue number: 21

Article number: 214507

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevB.96.214507

Publication open access: Other way freely accessible online

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/56587

Web address where publication is available: https://arxiv.org/abs/1709.01444

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 by either the diffusion or the inelastic relaxation of nonequilibrium quasiparticles. We demonstrate that the inelastic electron-phonon relaxation leads to the strong suppression of FFC compared to the previous estimates, making it possible to obtain numerical agreement with experimental results.

Keywords: superconductivity

Free keywords: conductivit; Keldysh-Usadel kinetic theory

Fields of science: