Subgap Conductivity of a Superconducting-Normal Tunnel Interface
Condensed Matter
2009-10-22 v1
Abstract
At low temperatures, the transport through a superconducting-normal tunnel interface is due to tunneling of electrons in pairs. The probability for this process is shown to depend on the layout of the electrodes near the tunnel junction, rather than on properties of the tunnel barrier. This dependence is due to interference of the electron waves on a space scale determined by the coherence length, either in the normal or the superconducting metal. The approach developed allows us to evaluate the subgap current for different layouts of interest.
Cite
@article{arxiv.cond-mat/9302034,
title = {Subgap Conductivity of a Superconducting-Normal Tunnel Interface},
author = {F. W. J. Hekking and Yu. V. Nazarov},
journal= {arXiv preprint arXiv:cond-mat/9302034},
year = {2009}
}
Comments
13 pages REVTex, PostScript figures would be mailed upon request