Thermal Conductance of a Single-Electron Transistor

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 t...

Full description

Saved in:
Bibliographic Details
Published inPhysical review letters Vol. 119; no. 7; p. 077701
Main Authors Dutta, B, Peltonen, J T, Antonenko, D S, Meschke, M, Skvortsov, M A, Kubala, B, König, J, Winkelmann, C B, Courtois, H, Pekola, J P
Format Journal Article
LanguageEnglish
Published United States 18.08.2017
Online AccessGet more information

Cover

More Information
Summary: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.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.119.077701