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  • Open Access

Enhanced thermoelectric effects in a driven one-dimensional system

C. X. Zhang1, Alessandro Braggio1,2, Alessandro Romito3, and Fabio Taddei1,*

  • *Contact author: fabio.taddei@nano.cnr.it
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Phys. Rev. Research 7, 043273 – Published 9 December, 2025

DOI: https://doi.org/10.1103/f9m9-197v

Abstract

We investigate the thermoelectric properties of a one-dimensional quantum system in the presence of an external driving. We employ Floquet scattering theory to calculate linear-response stationary thermoelectric figures of merit in a single-channel conductor subjected to a periodically varying deltalike potential barrier. We also include a step barrier in one of the leads as a model of a nanoscale inhomogeneous semiconducting system. In the absence of a step barrier, we found that external driving can significantly enhance the Seebeck coefficient, particularly at low temperatures, with a relative increase of up to 200% at high frequencies compared to the static case. In the presence of a step barrier, we found that the thermoelectric Onsager coefficient for the driven case is also enhanced compared to the static case, with a significant photon-assisted effect at low temperatures when the chemical potential is within the semiconductor's gap. Our results demonstrate that external driving can be used to tune and enhance the thermoelectric capabilities of low-electron-density nanodevices.

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Phys. Rev. Research 7, 043273– Published 9 December, 2025
  • Received 2 July 2025
  • Accepted 22 October 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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