Superconducting phases and the second Josephson harmonic in tunnel junctions between diffusive superconductors
arXiv:2105.05786 · doi:10.1103/PhysRevB.104.064514
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.
arXiv comment13 pages, 4 figures
References in corpus (7)
- Quasiclassical Green's function approach to mesoscopic superconductivity
- Novel Circuit Theory of Andreev Reflection
- Critical current in SFIFS junctions
- Crossover from the Josephson effect to bulk superconducting flow
- Kinetic equation approach to diffusive superconducting hybrid devices
- The current-phase relation in Josephson tunnel junctions
- Anharmonic Josephson current in junctions with an interface pair breaking