Non-equilibrium and proximity effects in superconductor-normal metal junctions

Abstract

We study the consequences of non-equilibrium heating and inverse proximity effect in normal metal - insulator - superconductor - insulator - normal metal (NISIN) junctions with a simple quasi-one-dimensional model. We especially focus on observables and parameter regions that are of interest in the design of SINIS coolers with quasiparticle traps. We present numerical results calculated by solving the Usadel equation and also present analytical approximations in two limiting cases: a short junction with a non-negligible resistance in both ends and a long junction with a transparent contact at one end.

7 pages, 6 figures

References in corpus (3)

• Micrometre-scale refrigerators
• Andreev Current-Induced Dissipation in a Hybrid Superconducting Tunnel Junction
• Trapping hot quasi-particles in a high-power superconducting electronic cooler

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• Relaxation of Nonequilibrium Quasiparticles in Mesoscopic Size Superconductors
• Proximity effect in normal-metal quasiparticle traps
• Low-temperature electron-phonon heat transfer in metal films
• Fluctuation of heat current in Josephson junctions
• Electron-phonon heat exchange in layered nano-systems