Radio-frequency single-electron refrigerator

Research output: Contribution to journalArticle


Research units

  • Scuola Normale Superiore di Pisa


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.


Original languageEnglish
Article number037201
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Issue number3
Publication statusPublished - 16 Jan 2007
MoE publication typeA1 Journal article-refereed

    Research areas

  • mesoscopic electron transport, normal metal-superconductor, single-electron refrigerator

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