Heat transistor: Demonstration of gate-controlled electronic refrigeration

Olli-Pentti Saira, Matthias Meschke, Francesco Giazotto, Alexander Savin, Mikko Möttönen, Jukka Pekola

Research output: Contribution to journalArticleScientificpeer-review

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We present experiments on a superconductor–normal-metal electron refrigerator in a regime where single-electron charging effects are significant. The system functions as a heat transistor; i.e., the heat flux out from the normal-metal island can be controlled with a gate voltage. A theoretical model developed within the framework of single-electron tunneling provides a full quantitative agreement with the experiment. This work serves as the first experimental observation of Coulombic control of heat transfer and, in particular, of refrigeration in a mesoscopic system.
Original languageEnglish
Article number027203
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Issue number2
Publication statusPublished - 9 Jul 2007
MoE publication typeA1 Journal article-refereed


  • electronic refrigeration
  • heat transistor
  • superconductor-nrmal metal


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