Interface dependence of the Josephson-current fluctuations in short SNS junctions
Mesoscale and Nanoscale Physics
2009-11-13 v2 Superconductivity
Abstract
We discuss the dependence of the Josephson current correlations in mesoscopic superconductor/normal-conductor/superconductor (SNS) devices on the transparency of the superconductor/normal-conductor (SN) interfaces. Focusing on short junctions we apply the supersymmetry method to construct an effective field theory for mesoscopic SNS devices which is evaluated in the limit of highly and weakly transparent interfaces. We show that the two-point Josephson-current correlator differs by an universal factor 2 in these two cases.
Keywords
Cite
@article{arxiv.cond-mat/0701746,
title = {Interface dependence of the Josephson-current fluctuations in short SNS junctions},
author = {T. Micklitz},
journal= {arXiv preprint arXiv:cond-mat/0701746},
year = {2009}
}
Comments
5 pages, 1figure, version accepted by PRB