Year: 2020
Type: article
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.
Source: Applied Physics Letters
DOI: 10.1063/5.0008866
Authors: Jens Schulenborg, Maarten R. Wegewijs, Janine Splettstoesser
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W3035812339