Electronic Refrigeration at the Quantum Limit

2009/02/17 by Andrey V. Timofeev, Andrey Timofeev, Meri Helle +5 · 3 citations
Engineering · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Condensed matter physics #Heat flux #Heat transfer #Materials science #Physics #Quantum #Quantum mechanics #Quasiparticle #Refrigeration #Superconducting and THz Device Technology #Superconductivity #Thermal Radiation and Cooling Technologies #Thermal conductivity #Thermodynamics #cond-mat.mes-hall #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.102.200801

5 pages, 3 figures

arxiv created 2009/02/17 · openalex publication_date 2009/05/18 · arxiv updated 2015/05/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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 microm 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.

Citations

• Recombination-Limited Energy Relaxation in a Bardeen-Cooper-Schrieffer Superconductor
• Thermal Agitation of Electric Charge in Conductors
• Thermal Agitation of Electricity in Conductors

Cited by

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