Electronic refrigeration at the quantum limit
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2009-05-18
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Language
en
Pages
4
1-4
1-4
Series
Physical Review Letters, Volume 102, issue 20
Abstract
We demonstrate quantum-limited electronic refrigeration of a metallic island in a low-temperature microcircuit. We show that matching the impedance of the circuit enables refrigeration at a distance, of about 50 μm in our case, through superconducting leads with a cooling power determined by the quantum of thermal conductance. In a reference sample with a mismatched circuit this effect is absent. Our results are consistent with the concept of electromagnetic heat transport. We observe and analyze the crossover between electromagnetic and quasiparticle heat flux in a superconductor.Description
Keywords
electronic refrigeration, heat transport, quantum limit
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Citation
Timofeev , A , Helle , M , Meschke , M , Möttönen , M & Pekola , J 2009 , ' Electronic refrigeration at the quantum limit ' , Physical Review Letters , vol. 102 , no. 20 , 200801 , pp. 1-4 . https://doi.org/10.1103/PhysRevLett.102.200801