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Single-electron thermal devices coupled to a mesoscopic gate
Zitieren Sie bitte immer diese 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.…
Autor(en): | Rafael Sánchez, Holger Thierschmann, Laurens W. Molenkamp |
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URN: | urn:nbn:de:bvb:20-opus-172982 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Physik und Astronomie / Physikalisches Institut |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | New Journal of Physics |
Erscheinungsjahr: | 2017 |
Band / Jahrgang: | 19 |
Aufsatznummer: | 113040 |
Originalveröffentlichung / Quelle: | 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 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Freie Schlagwort(e): | heat currents; physics; quantum dot; single-electron tunneling; thermal devices |
Datum der Freischaltung: | 25.05.2021 |
EU-Projektnummer / Contract (GA) number: | 339306 |
OpenAIRE: | OpenAIRE |
Lizenz (Deutsch): | CC BY: Creative-Commons-Lizenz: Namensnennung |