Critical voltage of a mesoscopic superconductor

Details Critical voltage of a mesoscopic superconductor Critical voltage of a mesoscopic superconductor

2005-02-18

arxiv.org/abs/cond-mat/0502435v1

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevLett.96.147002

We study the role of the quasiparticle distribution function f on the properties of a superconducting nanowire. We employ a numerical calculation based upon the Usadel equation. Going beyond linear response, we find a non-thermal distribution for f caused by an applied bias voltage. We demonstrate that the even part of f (the energy mode f_L) drives a first order transition from the superconducting state to the normal state irrespective of the current.

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