Multiparticle tunnelling in diffusive superconducting junctions
Artikel i vetenskaplig tidskrift, 2007

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. © IOP Publishing Ltd.

Författare

Eugene Bezuglyi

Chalmers, Mikroteknologi och nanovetenskap (MC2)

Andrey Vasenko

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

E.N. Bratus'

B Verkin Institute for Low Temperature Physics and Engineering Nasu

Vitaly Shumeiko

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Göran Wendin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Superconductor Science and Technology

0953-2048 (ISSN) 1361-6668 (eISSN)

Vol. 20 6 529-541

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1088/0953-2048/20/6/008