Thermovoltage in quantum dots with attractive interaction
Abstract
We study the linear and nonlinear thermovoltage of a quantum dot with effective attractive electron-electron interaction and weak, energy-dependent tunnel-coupling to electronic contacts. Remarkably, we find that the thermovoltage shows signatures of repulsive interaction which can be rationalized. These thermovoltage characteristics are robust against large potential and temperature differences well into the nonlinear regime, which we expect can be demonstrated in current state-of-the-art experiments. Furthermore, under nonlinear operation, we find extended regions of large power production at efficiencies on the order of the Curzon-Ahlborn bound interrupted only by a characteristic sharp dip.
Cite
@article{arxiv.2003.11146,
title = {Thermovoltage in quantum dots with attractive interaction},
author = {Jens Schulenborg and Maarten R. Wegewijs and Janine Splettstoesser},
journal= {arXiv preprint arXiv:2003.11146},
year = {2020}
}
Comments
5 pages, 4 figures. Supplementary material to the article can be downloaded under ancilliary files in the menu on the right. This article appeared in Appl. Phys. Lett. 116, 243103 (2020) and may be found at https://doi.org/10.1063/5.0008866 . This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing