Electron Transport in Mesoscopic Disordered SNS Junctions
Abstract
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/V.
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