A Single-Quantum-Dot Heat Valve

Authors :: Hervé Courtois
N. Lo Gullo
Bivas Dutta
D. Majidi
N. W. Talarico
Clemens Winkelmann
Nano-Electronique Quantique et Spectroscopie (QuNES)
Institut Néel (NEEL)
Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )
Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )
Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)
University of Turku
Source :: Physical Review Letters, Physical Review Letters, American Physical Society, 2020, 125 (23), pp.237701. ⟨10.1103/PhysRevLett.125.237701⟩
Publication Year :: 2020
Abstract: We demonstrate gate control of electronic heat flow in a thermally-biased single-quantum-dot junction. Electron temperature maps taken in the immediate vicinity of the junction, as a function of the gate and bias voltages applied to the device, reveal clearly defined Coulomb diamond patterns revealing a maximum heat transfer right at the charge degeneracy point. The non-trivial bias and gate dependence of this heat valve results from both the quantum nature of the dot at the heart of device and its strong coupling to leads.<br />11 pages, 11 figures, to appear in Phys. Rev. Lett

Language :: English
ISSN :: 00319007 and 10797114
Database :: OpenAIRE
Journal :: Physical Review Letters, Physical Review Letters, American Physical Society, 2020, 125 (23), pp.237701. ⟨10.1103/PhysRevLett.125.237701⟩
Accession number :: edsair.doi.dedup.....54c3e4d1dd984520dbb28dcdde48a910
Full Text :: https://doi.org/10.1103/PhysRevLett.125.237701⟩