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Single-electron thermal devices coupled to a mesoscopic gate

Please always quote using this URN: urn:nbn:de:bvb:20-opus-172982
  • We theoretically investigate the propagation of heat currents in a three-terminal quantum dot engine. Electron–electron interactions introduce state-dependent processes which can be resolved by energy-dependent tunneling rates. We identify the relevant transitions which define the operation of the system as a thermal transistor or a thermal diode. In the former case, thermal-induced charge fluctuations in the gate dot modify the thermal currents in the conductor with suppressed heat injection, resulting in huge amplification factors and theWe theoretically investigate the propagation of heat currents in a three-terminal quantum dot engine. Electron–electron interactions introduce state-dependent processes which can be resolved by energy-dependent tunneling rates. We identify the relevant transitions which define the operation of the system as a thermal transistor or a thermal diode. In the former case, thermal-induced charge fluctuations in the gate dot modify the thermal currents in the conductor with suppressed heat injection, resulting in huge amplification factors and the possible gating with arbitrarily low energy cost. In the latter case, enhanced correlations of the state-selective tunneling transitions redistribute heat flows giving high rectification coefficients and the unexpected cooling of one conductor terminal by heating the other one. We propose quantum dot arrays as a possible way to achieve the extreme tunneling asymmetries required for the different operations.show moreshow less

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Metadaten
Author: Rafael Sánchez, Holger Thierschmann, Laurens W. Molenkamp
URN:urn:nbn:de:bvb:20-opus-172982
Document Type:Journal article
Faculties:Fakultät für Physik und Astronomie / Physikalisches Institut
Language:English
Parent Title (English):New Journal of Physics
Year of Completion:2017
Volume:19
Article Number:113040
Source:New Journal of Physics (2017) 19:113040. https://iopscience.iop.org/article/10.1088/1367-2630/aa8b94
DOI:https://doi.org/10.1088/1367-2630/aa8b94
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Tag:heat currents; physics; quantum dot; single-electron tunneling; thermal devices
Release Date:2021/05/25
EU-Project number / Contract (GA) number:339306
OpenAIRE:OpenAIRE
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung