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Ultra-efficient Cooling in Ferromagnet-Superconductor Microrefrigerators

F. Giazotto·F. Taddei·R. Fazio·F. Beltram
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Abstract

A promising scheme for electron microrefrigeration based on ferromagnet-superconductor contacts is presented. In this setup, cooling power densities up to 600 nW/$μ$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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F. Giazotto, F. Taddei, R. Fazio, F. Beltram. 2002-03-18. Ultra-efficient Cooling in Ferromagnet-Superconductor Microrefrigerators. https://doi.org/10.1063/1.1481242

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