2017/04/09 by B. Dutta, Bivas Dutta, J. T. Peltonen +12 · 87 citations
Engineering · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Charge (physics) #Condensed matter physics #Conductance #Coulomb blockade #Current (fluid) #Degeneracy (biology) #Drop (telecommunication) #Electrical engineering #Electron #Materials science #Physics #Quantum and electron transport phenomena #Quantum mechanics #Thermal Radiation and Cooling Technologies #Thermal conduction #Thermodynamics #Transistor #Voltage #Voltage drop #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.119.077701
published in Physical Review Letters 119(7), 077701 (American Physical Society) · 5 pages, 4 figures + supplementary material
arxiv created 2017/04/09 · openalex publication_date 2017/08/15 · arxiv updated 2017/08/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.