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Radio-Frequency Single-Electron Refrigerator

Jukka P. Pekola, Francesco Giazotto, and Olli-Pentti Saira
Phys. Rev. Lett. 98, 037201 – Published 16 January 2007

Abstract

We propose a cyclic refrigeration principle based on mesoscopic electron transport. Synchronous sequential tunneling of electrons in a Coulomb-blockaded device, a normal metal-superconductor single-electron box, results in a cooling power of kBT×f at temperature T over a wide range of cycle frequencies f. Electrostatic work, done by the gate voltage source, removes heat from the Coulomb island with an efficiency of kBT/Δ, where Δ is the superconducting gap parameter. The performance is not affected significantly by nonidealities, for instance by offset charges. We propose ways of characterizing the system and of its practical implementation.

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  • Received 3 August 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.037201

©2007 American Physical Society

Authors & Affiliations

Jukka P. Pekola1, Francesco Giazotto2, and Olli-Pentti Saira1

  • 1Low Temperature Laboratory, Helsinki University of Technology, P.O. Box 3500, 02015 TKK, Finland
  • 2NEST CNR-INFM & Scuola Normale Superiore, I-56126 Pisa, Italy

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Issue

Vol. 98, Iss. 3 — 19 January 2007

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