Electronic refrigeration at the quantum limit
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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4
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Physical Review Letters, Volume 102, issue 20, pp. 1-4
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
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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