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arXiv · 2001.08183

A Single-Quantum-Dot Heat Valve

B. Dutta·D. Majidi·N. W. Talarico·N. Lo Gullo·C. B. Winkelmann·H. Courtois
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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.

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B. Dutta, D. Majidi, N. W. Talarico, N. Lo Gullo, C. B. Winkelmann, H. Courtois. 2020-01-22. A Single-Quantum-Dot Heat Valve. https://doi.org/10.1103/physrevlett.125.237701

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