Thermoelectric transport properties of coupled quantum dots

We study thermoelectric properties of coupled quantum dots (QDs), employing the impurity Anderson model (IAM), taking into account strong, but finite electronic correlation in each QD, and a Green's functions approximation with a many-body character [1,2]. We consider two geometrical configurations: two identical inmersed QDs in a quantum wire (QW), taking the first QD in different regimes (diffferent energy values) and the second one in the symmetric condition of the IAM; the second geometrical configuration describes a first QD side coupled to a QW for different QD energy values, a second QD in the symmetric condition is inmersed in the QW. Employing linear response theory we compute the electric (G) and thermal (K) conductances, thermopower (S), and the product between the thermoelectric figure of merit and the temperature (ZT) [2] for different themperatures and regimes of the first QD, studing too the validity of the Wiedemann-Franz law and the quantum scaterring process and analising its possible relation with the ZT improves conditions. We obtain specific conditions that enhance ZT (ZT >4) and that would be tested for experimental work.
[1] T. Lobo et al. Nanotechnology, 21(27):274007, 2010.
[2] E. Ramos et al. International Journal of Thermal Sciences 86 (2014) 387e 393.