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Proximity Effect and Multiple Andreev Reflections in Diffusive SNS Junctions

J. C. Cuevas·J. Hammer·J. Kopu·J. K. Viljas·M. Eschrig
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Abstract

We present a theory of the current-voltage characteristics in diffusive superconductor-normal-metal-superconductor junctions. By solving the time-dependent Usadel equations we are able to describe the phase-coherent transport for arbitrary length of the normal wire. We show how the interplay between proximity effect and multiple Andreev reflections gives rise to a rich subgap structure in the conductance and how it is revealed in the non-equilibrium distribution function.

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J. C. Cuevas, J. Hammer, J. Kopu, J. K. Viljas, M. Eschrig. 2005-07-11. Proximity Effect and Multiple Andreev Reflections in Diffusive SNS Junctions. https://doi.org/10.1103/physrevb.73.184505

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