Nonequilibrium Superconductor-Normal Metal Tunnel Contact and the Phonon Deficit Effect

Details Nonequilibrium Superconductor-Normal Metal Tunnel Contact and the Phonon Deficit Effect Nonequilibrium Superconductor-Normal Metal Tunnel Contact and the Phonon Deficit Effect

1999-09-11

arxiv.org/abs/cond-mat/9909170v1

Physica B 284-288 (2000) 2032

Physics

Condensed Matter

Superconductivity

2 pages, 1 figure

Scientific paper

10.1016/S0921-4526(99)02823-9

We consider tunnel microrefrigerators at low temperature. There is a number of experimental studies performed on microrefrigeration in tunneling superconductor--normal metal (SN) structures. Related to these experiments, only the electron subsystem has been considered theoretically. Independently, the phonon deficit effect has been studied a while ago in superconductor-superconductor tunnel junctions. It can be regarded as a possible prototype scheme for superconducting microrefrigerators. We try to provide the missing link between experiments on the SN tunnel junction refrigerators and the theory which includes microscopically phonons in combination with the mechanism of the phonon deficit effect.

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