Photon-Mediated Thermoelectric and Heat Currents through a Resonant Quantum Wire-Cavity System
Publisher's version (útgefin grein) We theoretically consider a short quantum wire, which on both ends is connected to leads that have different temperatures. The quantum wire is assumed to be coupled to a cavity with a single-photon mode. We calculate the heat and thermoelectric currents in th...
Published in: | Energies |
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Main Authors: | , , |
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2019
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Subjects: | |
Online Access: | https://hdl.handle.net/20.500.11815/2055 https://doi.org/10.3390/en12061082 |
Summary: | Publisher's version (útgefin grein) We theoretically consider a short quantum wire, which on both ends is connected to leads that have different temperatures. The quantum wire is assumed to be coupled to a cavity with a single-photon mode. We calculate the heat and thermoelectric currents in the quantum wire under the effect of the photon field. In the absence of the photon field, a plateau in the thermoelectric current is observed due to the thermal smearing at a high temperature gradient. In the presence of the resonance photon field, when the energy spacing between the lowest states of the quantum wire is approximately equal to the photon energy, a suppression in thermoelectric current and negativity in the heat current are seen due to the dressed electron-photon states. It is also found that the cavity with high photon energy has more influence on the thermoelectric current at a high temperature gradient. This work was financially supported by the Research Fund of the University of Iceland, the Icelandic Research Fund, Grant No. 163082-051, and the Icelandic Infrastructure Fund. The fund was awarded to Vidar Gudmundsson from Iceland University. Peer Reviewed |
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