Cooling Electrons by Magnetic-Field Tuning of Andreev Reflection
Francesco Giazotto, Fabio Taddei, Michele Governale, Carlo Castellana, Rosario Fazio, Fabio Beltram
DOI 10.1103/PhysRevLett.97.197001 · Physical Review Letters
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Abstract
A solid-state cooling principle based on magnetic-field-driven tunable suppression of Andreev reflection in superconductor/two-dimensional electron gas nanostructures is proposed. This cooling mechanism can lead to very large heat fluxes per channel up to 104 times greater than currently achieved with superconducting tunnel junctions. This efficacy and its availability in a two-dimensional electron system make this method of particular relevance for the implementation of quantum nanostructures operating at cryogenic temperatures.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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