Physics – Condensed Matter – Superconductivity
Scientific paper
2012-04-12
International Workshop on Superconducting Nano-electronics Devices (Kluwer Academic, Dordrecht, 2002), p. 165
Physics
Condensed Matter
Superconductivity
10 pages, 6 figures
Scientific paper
We consider a model NISIN system with two junctions in series, where N is a normal metal, S is a superconductor and I is an insulator. We assume that the resistance of the first junction is high, while the resistance of the second one is low. In this case the first junction cools the left normal electrode, while the second junction partially removes excited quasiparticles from the superconductor. We consider cooling properties of this double junction structure. It is shown that the cooling power depends strongly on the ratio of the resistances of the two junctions. In conclusion, we derive a generalized expression for the cooling power of a NIS tunnel junction taking into account charge imbalance effects.
Golubev Dmitri S.
Vasenko Andrey S.
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