Proximity-induced transport in hybrid mesoscopic normal-superconducting metal structures

Details Proximity-induced transport in hybrid mesoscopic normal-superconducting metal structures Proximity-induced transport in hybrid mesoscopic normal-superconducting metal structures

1998-11-11

arxiv.org/abs/cond-mat/9811151v2

Physics

Condensed Matter

Superconductivity

8 pages, 5 figures, with added refrences

Scientific paper

10.1006/spmi.1999.0749

Using an approach based on quasiclassical Green's functions we present a theoretical study of transport in mesoscopic S/N structures in the diffusive limit. The subgap conductance in S/N structures with barriers (zero bias and finite bias anomalies) are discused. We also analyse the temperature dependence of the conductance variation $\delta S(T)$ for a Andreev interferometer. We show that besides the well know low temperature maximum a second maximum near $T_c$ may appear. We present the results of studies on the Josephson effect in 4 terminal S/N/S contacts and on the possible sign reversal of the Josephson critical current.

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