Spin-orbit coupling effects on thermoelectric transport properties in quantum dots

We study the effects caused by Rashba and Dresselhaus spin-orbit coupling\nover the thermoelectric transport properties of a single-electron transistor,\nviz., a quantum dot connected to one-dimensional leads. Using linear response\ntheory and employing the numerical renormalization group method, we calculate\nthe thermopower, electrical and thermal conductances, dimensionless\nthermoelectric figure of merit, and study the Wiedemann-Franz law, showing\ntheir temperature maps. Our results for all those properties indicate that\nspin-orbit coupling drives the system into the Kondo regime. We show that the\nthermoelectric transport properties, in the presence of spin-orbit coupling,\nobey the expected universality of the Kondo strong coupling fixed point. In\naddition, our results show a notable increase in the thermoelectric figure of\nmerit, caused by the spin-orbit coupling in the one-dimensional quantum dot\nleads.\n