Photon-Mediated Thermoelectric and Heat Currents through a Resonant Quantum Wire-Cavity System

Nzar Rauf Abdullah, Rawezh Bakr Marif and Hunar Omar Rashid
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Nzar Rauf Abdullah: Physics Department, College of Science, University of Sulaimani, Sulaymaniyah, Iraq
Rawezh Bakr Marif: Physics Department, College of Science, University of Sulaimani, Sulaymaniyah, Iraq
Hunar Omar Rashid: Physics Department, College of Science, University of Sulaimani, Sulaymaniyah, Iraq

Energies, 2019, vol. 12, issue 6, 1-12

Abstract: 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.

Keywords: thermal transport; quantum wires; cavity quantum electrodynamics; electro-optical effects; energy harvesting (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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