A Single-Quantum-Dot Heat Valve

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.

11 pages, 11 figures, to appear in Phys. Rev. Lett

References in corpus (8)

• Energy Dissipation and Transport in Nanoscale Devices
• Quantum limit of heat flow across a single electronic channel
• Thermopower of a Kondo-correlated quantum dot
• The Josephson heat interferometer
• Quantum dot as thermal rectifier
• Violation of the Wiedemann-Franz Law in a Single-Electron Transistor
• Heat Transistor: Demonstration of Gate-Controlled Electron Refrigeration
• Thermoelectric conversion at 30K in InAs/InP nanowire quantum dots

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• Quantum confinement suppressing electronic heat flow below the Wiedemann-Franz law
• Heat transport and rectification via quantum statistical and coherence asymmetries
• Thermoelectric transport within density functional theory
• Autonomous demon exploiting heat and information at the trajectory level
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• Interacting electrons in a flat-band system within the Generalized Kadanoff-Baym Ansatz
• Voltage-amplified heat rectification in SIS junctions
• Current noise in quantum dot thermoelectric engines
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• Phonon-mediated spin dynamics in a two-electron double quantum dot under a phonon temperature gradient
• Implementation of SNS thermometers into molecular devices for cryogenic thermoelectric experiments
• Heat transport in a two-level system driven by a time-dependent temperature
• The reverse flow and amplification of heat in a quantum-dot system