Efficient electron refrigeration using superconductor/spin-filter devices
arXiv:1307.2318 · doi:10.1063/1.4813599
Abstract
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.
5 pages, 3 figures, Appl. Phys. Lett. (2013) in press
References in corpus (4)
Cited by in corpus (31)
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