Ultra-efficient Cooling in Ferromagnet-Superconductor Microrefrigerators

Details Ultra-efficient Cooling in Ferromagnet-Superconductor Microrefrigerators Ultra-efficient Cooling in Ferromagnet-Superconductor Microrefrigerators

2002-03-18

arxiv.org/abs/cond-mat/0203355v1

Physics

Condensed Matter

Superconductivity

9 pages, 3 figures, submitted to Applied Physics Letters

Scientific paper

10.1063/1.1481242

A promising scheme for electron microrefrigeration based on ferromagnet-superconductor contacts is presented. In this setup, cooling power densities up to 600 nW/$\mu$m$^2$ can be achieved leading to electronic temperature reductions largely exceeding those obtained with existing superconductor-normal metal tunnel contacts. Half-metallic CrO$_2$/Al bilayers are indicated as ideal candidates for the implementation of the device.

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