Electron Transport in Mesoscopic Disordered SNS Junctions

Details Electron Transport in Mesoscopic Disordered SNS Junctions Electron Transport in Mesoscopic Disordered SNS Junctions

1997-06-10

arxiv.org/abs/cond-mat/9706087v1

Physics

Condensed Matter

Superconductivity

14 pages, RevTex, 5 postscript figures

Scientific paper

We have generalized the scattering-matrix theory of multiple Andreev reflections in mesoscopic Josephson junctions to the multi-mode case, and applied it to short superconductor/normal metal/superconductor junctions with diffusive electron transport. Both the dc and ac current-voltage characteristics are analyzed for a wide range of bias voltages $V$. For voltages smaller than the supeconducting gap the dc differential conductance of the junction diverges as $1/\sqrt{V}$.

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