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Efficient electron refrigeration using superconductor/spin-filter devices

delete2013-07-15
delete37
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OA
AI
S
Shiro Kawabata *
O
Ozaeta, Asier
A
Andrey S. Vasenko
H
Hekking, Frank W. J.
S
Sebastian Bergeret, F.
DOI:10.1063/1.4813599delete
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Abstract

Abstract

En 中文
Efficient electron-refrigeration based on a normal-metal/spin-filter/superconductor junction is proposed and demonstrated theoretically. The spin-filtering effect leads to values of the cooling power much higher than in conventional normal-metal/nonmagnetic-insulator/superconductor coolers and allows for an efficient extraction of heat from the normal metal. We demonstrate that highly efficient cooling can be realized in both ballistic and diffusive multi-channel junctions in which the reduction of the electron temperature from 300 mK to around 50 mK can be achieved. Our results indicate the practical usefulness of spin-filters for efficiently cooling detectors, sensors, and quantum devices. (C) 2013 AIP Publishing LLC.
Keywords:
JUNCTIONS

Journal

Applied Physics Letters cover
Applied Physics Letters
IF:
3.6
Papers:
10.4W
Citations:
17.8W

Organization

C
communaute universite grenoble alpes
Scholars:
3.5W
Papers: 2.7W
Citations: 29
U
university of basque country
Scholars:
1.9W
Papers: 1.6W
Citations: 17