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Self-consistent calculation of the flux-flow conductivity in diffusive superconductors
KTH, School of Engineering Sciences (SCI), Physics.
2017 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 96, no 21, article id 214507Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
American Physical Society, 2017. Vol. 96, no 21, article id 214507
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-220593DOI: 10.1103/PhysRevB.96.214507ISI: 000418195700003Scopus ID: 2-s2.0-85039427751OAI: oai:DiVA.org:kth-220593DiVA, id: diva2:1175155
Note

QC 20180117

Available from: 2018-01-17 Created: 2018-01-17 Last updated: 2018-01-17Bibliographically approved

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