Proximity Effect and Multiple Andreev Reflections in Diffusive SNS Junctions

Details Proximity Effect and Multiple Andreev Reflections in Diffusive SNS Junctions Proximity Effect and Multiple Andreev Reflections in Diffusive SNS Junctions

2005-07-11

arxiv.org/abs/cond-mat/0507247v1

Phys. Rev. B 73, 184505 (2006); also Virtual Journal of Applications of Superconductivity, 10/10 (2006)

Physics

Condensed Matter

Superconductivity

revtex4, 4 pages, 4 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevB.73.184505

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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