Effect of Quasiparticles Injection on the AC Response of a Superconductor

Abstract

We calculate the AC linear response of a superconductor in a nonequilibrium electronic state. The nonequilibrium state is produced by injecting quasiparticles into the superconductor from normal leads through asymmetric tunnel contacts. The dissipative part of the response is drastically increased by the injected quasiparticles and is proportional to their total number regardless of the imbalance between the numbers of electron-like and hole-like excitations.

arXiv comment9 pages, 1 figure

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