Thermal Conductance of a Single-Electron Transistor

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Researchers

Research units

  • Universite Grenoble Alpes
  • Skolkovo Institute of Science and Technology
  • Landau Institute for Theoretical Physics
  • Moscow Institute of Physics and Technology
  • Ulm University
  • University of Duisburg-Essen

Abstract

We report on combined measurements of heat and charge transport through a single-electron transistor. The device acts as a heat switch actuated by the voltage applied on the gate. The Wiedemann-Franz law for the ratio of heat and charge conductances is found to be systematically violated away from the charge degeneracy points. The observed deviation agrees well with the theoretical expectation. With a large temperature drop between the source and drain, the heat current away from degeneracy deviates from the standard quadratic dependence in the two temperatures.

Details

Original languageEnglish
Article number077701
Pages (from-to)1-5
JournalPhysical Review Letters
Volume119
Issue number7
Publication statusPublished - 15 Aug 2017
MoE publication typeA1 Journal article-refereed

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