Journal
PHYSICAL REVIEW B
Volume 73, Issue 18, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevB.73.184505
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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 nonequilibrium distribution function.
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