Spin-dependent heat and thermoelectric currents in a Rashba ring coupled to a photon cavity

Abstract

Spin-dependent heat and thermoelectric currents in a quantum ring with Rashba spin-orbit interaction placed in a photon cavity are theoretically calculated. The quantum ring is coupled to two external leads with different temperatures. In a resonant regime, with the ring structure in resonance with the photon field, the heat and the thermoelectric currents can be controlled by the Rashba spin-orbit interaction. The heat current is suppressed in the presence of the photon field due to contribution of the two-electron and photon replica states to the transport while the thermoelectric current is not sensitive to changes in parameters of the photon field. Our study opens a possibility to use the proposed interferometric device as a tunable heat current generator in the cavity photon field.

arXiv commentRevTeX, 16 pages with 14 eps-figures included

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• The interplay of electron-photon and cavity-environment coupling on the electron transport through a quantum dot system
• The photocurrent generated by photon replica states of an off-resonantly coupled dot-cavity system
• Effects of photon field on heat transport through a quantum wire attached to leads
• Single-photon controlled thermospin transport in a resonant ring-cavity system
• Oscillations in electron transport caused by multiple resonances in a quantum dot-QED system in the steady-state regime
• Generalized Master Equation Approach to Time-Dependent Many-Body Transport
• Thermoelectric inversion in a resonant quantum dot-cavity system in the steady-state regime
• Thermal transport controlled by intra- and inter-dot Coulomb interactions in sequential and cotunneling serially-coupled double quantum dots
• Thermal transport driven by Coulomb interactions in quantum dots: Enhancement of thermoelectric and heat currents
• Properties of bilayer graphene-like Si${}_2$C${}_{14}$ semiconductor using first-principle calculations