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.
@article{arxiv.2001.08183,
title = {A Single-Quantum-Dot Heat Valve},
author = {B. Dutta and D. Majidi and N. W. Talarico and N. Lo Gullo and C. B. Winkelmann and H. Courtois},
journal= {arXiv preprint arXiv:2001.08183},
year = {2020}
}
Comments
11 pages, 11 figures, to appear in Phys. Rev. Lett