Multiparticle tunnelling in diffusive superconducting junctions

Multiparticle tunnelling in diffusive superconducting junctions

We formulate a theoretical framework to describe multiparticle current transport in planar superconducting tunnel junctions with diffusive electrodes. The approach is based on the direct solving of quasiclassical Keldysh-Green function equations for nonequilibrium superconductors, and consists of a...

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Veröffentlicht in:Superconductor science & technology 2007-06, Vol.20 (6), p.529-541
Hauptverfasser: Bezuglyi, E V, Vasenko, A S, Bratus’, E N, Shumeiko, V S, Wendin, G
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creator Bezuglyi, E V
Vasenko, A S
Bratus’, E N
Shumeiko, V S
Wendin, G
description We formulate a theoretical framework to describe multiparticle current transport in planar superconducting tunnel junctions with diffusive electrodes. The approach is based on the direct solving of quasiclassical Keldysh-Green function equations for nonequilibrium superconductors, and consists of a combination of circuit theory analysis and improved perturbation expansion. The theory predicts a much greater scaling parameter for the subharmonic gap structure of the tunnel current in diffusive junctions compared to the one in ballistic junctions and mesoscopic constrictions with the same barrier transparency.
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title Multiparticle tunnelling in diffusive superconducting junctions
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