Transient thermoelectricity in a vibrating quantum dot in Kondo regime

Abstract

We investigate the time evolution of the thermopower in a vibrating quantum dot suddenly shifted into the Kondo regime via a gate voltage by adopting the time-dependent non-crossing approximation and linear response Onsager relations. Behaviour of the instantaneous thermopower is studied for a range of temperatures both in zero and strong electron-phonon coupling. We argue that inverse of the saturation value of decay time of thermopower to its steady state value might be an alternative tool in determination of the Kondo temperature and the value of the electron-phonon coupling strength.

5 pages, 4 figures, to appear in Physics Letters A

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• Molecular Transport Junctions: Vibrational Effects
• An On-Demand Coherent Single Electron Source
• Thermoelectric transport through strongly correlated quantum dots
• Time-step targetting methods for real-time dynamics using DMRG
• Efficient DMFT-simulation of the Holstein-Hubbard Model
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Cited by in corpus (5)

• The Anderson--Holstein Model in Two Flavors of the Non--Crossing Approximation
• A many-body approach to transport in quantum systems: From the transient regime to the stationary state
• Mixed electrical-heat noise spectrum in a quantum dot
• Designer thermal switches: Effect of the contact material on instantaneous thermoelectric transport through a strongly interacting quantum dot
• Temporal evolution of Seebeck coefficient in an ac driven strongly correlated quantum dot