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Analytic Treatment of the Thermoelectric Properties for Two Coupled Quantum Dots Threaded by Magnetic Fields by Menichetti, G ;Grosso, G ;Parravicini, G Pastori is a Physics and Astronomy article available to read on EtoBox.

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## Abstract Coupled double quantum dots (c-2QD) connected to leads have been widely adopted as prototype model systems to verify interference effects on quantum transport at the nanoscale. We provide here an analytic study of the thermoelectric properties of c-2QD systems pierced by a uniform magnetic field. Fully analytic and easy-to-use expressions are derived for all the kinetic functionals of interest. Within the Green__’__s function formalism, our results allow a simple inexpensive procedure for the theoretical description of the thermoelectric phenomena for different chemical potentials and temperatures of the reservoirs, different threading magnetic fluxes, dot energies and interdot interactions; moreover they provide an intuitive guide to parametrize the system Hamiltonian for the design of best performing realistic devices. We have found that the thermopower __S__ can be enhanced by more than ten times and the figure of merit __ZT__ by more than hundred times by the presence of a threading magnetic field. Most important, we show that the magnetic flux increases also the performance of the device under maximum power output conditions.

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Author

Menichetti, G ;Grosso, G ;Parravicini, G Pastori

Publisher

IOP Publishing; Bristol: IOP Publishing, 2017- (ISSN 2399-6528)

Published

2018

Language

EN

Field

Physics and Astronomy (Physical Sciences)