Microwave-mediated heat transport through a quantum dot

Abstract

The thermoelectric effect in a quantum dot (QD) attached to two leads in the presence of microwave fields is studied by using the Keldysh nonequilibrium Green function technique. When the microwave is applied only on the QD and in the linear-response regime, the main peaks in the thermoelectric figure of merit and the thermopower are found to decrease, with the emergence of a set of photon-induced peaks. Under this condition the microwave field can not generate heat current or electrical bias voltage. Surprisingly, when the microwave field is applied only to one (bright) lead and not to the other (dark) lead or the QD, heat flows mostly from the dark to the bright lead, almost irrespectively to the direction of the thermal gradient. We attribute this effect to microwave-induced opening of additional transport channels below the Fermi energy. The microwave field can change both the magnitude and the sign of the electrical bias voltage induced by the temperature gradient.

5 figure

References in corpus (15)

• Thermal Logic Gates: Computation with phonons
• Single-mode heat conduction by photons
• Thermopower of a Kondo-correlated quantum dot
• Violation of the Wiedemann-Franz Law in a Single-Electron Transistor
• Giant Thermoelectric Effect from Transmission Supernodes
• Heat Transistor: Demonstration of Gate-Controlled Electron Refrigeration
• Enhancement of the thermoelectric figure of merit in a quantum dot due to the Coulomb blockade effect
• Sufficient conditions for thermal rectification in hybrid quantum structures
• Mesoscopic photon heat transistor
• Nonadiabatic electron heat pump
• Enhanced thermopower under time-dependent gate voltage
• Thermoelectric phenomena in a quantum dot asymmetrically coupled to external leads
• Thermoelectric properties of a weakly coupled quantum dot: enhanced thermoelectric efficiency
• Microwave-induced electron heating in the regime of radiation-induced magnetoresistance oscillations
• Tuning Coherent Radiative Thermal Conductance in Multilayer Photonic Crystals

Cited by in corpus (5)

• Boosting thermoelectric efficiency using time-dependent control
• The spinterface mechanism for the chiral-induced spin selectivity effect: A Critical Perspective
• Effects of photon field on heat transport through a quantum wire attached to leads
• Thermoelectric inversion in a resonant quantum dot-cavity system in the steady-state regime
• Charge and heat transport of soft nanosystems in the presence of time-dependent perturbations