Superconducting phases and the second Josephson harmonic in tunnel junctions between diffusive superconductors
Superconductivity
2021-09-15 v2 Mesoscale and Nanoscale Physics
Abstract
We consider a planar SIS-type Josephson junction between diffusive superconductors (S) through an insulating tunnel interface (I). We construct fully self-consistent perturbation theory with respect to the interface conductance. As a result, we find correction to the first Josephson harmonic and calculate the second Josephson harmonic. At arbitrary temperatures, we correct previous results for the nonsinusoidal current-phase relation in Josephson tunnel junctions, which were obtained with the help of conjectured form of solution. Our perturbation theory also describes the difference between the phases of the order parameter and of the anomalous Green functions.
Keywords
Cite
@article{arxiv.2105.05786,
title = {Superconducting phases and the second Josephson harmonic in tunnel junctions between diffusive superconductors},
author = {A. S. Osin and Ya. V. Fominov},
journal= {arXiv preprint arXiv:2105.05786},
year = {2021}
}
Comments
13 pages, 4 figures