Thermoelectric efficiency at maximum power in a quantum dot
Massimiliano Esposito, Katja Lindenberg, Christian Van den Broeck
TL;DR
This paper investigates the maximum power operation of a quantum dot thermoelectric engine, demonstrating that its efficiency aligns with the Curzon-Ahlborn expression beyond linear response, indicating universal behavior.
Contribution
It identifies the conditions for maximum power in a quantum dot thermoelectric device and shows the efficiency matches the Curzon-Ahlborn formula beyond linear response.
Findings
Efficiency at maximum power follows Curzon-Ahlborn expression up to quadratic order.
Operational conditions for maximum power are explicitly characterized.
Supports universality of thermodynamic efficiency beyond linear response.
Abstract
We identify the operational conditions for maximum power of a nanothermoelectric engine consisting of a single quantum level embedded between two leads at different temperatures and chemical potentials. The corresponding thermodynamic efficiency agrees with the Curzon-Ahlborn expression up to quadratic terms in the gradients, supporting the thesis of universality beyond linear response.
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