A Single-Quantum-Dot Heat Valve

• URL: http://arxiv.org/abs/2001.08183v3
• Date: Thu, 29 Oct 2020 10:52:31 GMT
• Title: A Single-Quantum-Dot Heat Valve
• Authors: B. Dutta, D. Majidi, N. W. Talarico, N. Lo Gullo, C. B. Winkelmann, and H. Courtois
• Abstract summary: We demonstrate gate control of electronic heat flow in a thermally-biased single-quantum-dot junction. 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.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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