Nonequilibrium Dynamics in a Superconducting Thin-Film Microbridge

Abstract

First measurements of the time for the recovery of the critical current at a phaseslip site have been made by studying the frequency dependence of the hysteretic rf current-voltage characteristics in the low-power limit. The data are incompatible with recent hot-spot models but can be expalined by a model relating a nonequilibrium length to the critical current.