Spin-dependent thermoelectric properties of a Kondo-correlated quantum dot with Rashba spin-orbit coupling

TL;DR

This paper investigates how Rashba spin-orbit coupling influences thermoelectric properties in a Kondo-regime quantum dot with ferromagnetic leads, revealing quantum interference effects on heat conductance and thermopower.

Contribution

It introduces a theoretical analysis of thermoelectric transport in a Kondo quantum dot considering Rashba spin-orbit interaction, highlighting quantum interference effects.

Findings

Rashba spin-orbit coupling significantly affects thermoelectric efficiency.

Quantum interference impacts heat conductance and thermopower.

Theoretical framework using finite-U slave boson method.

Abstract

Thermoelectric transport phenomena in a single-level quantum dot coupled to ferromagnetic leads are considered theoretically in the Kondo regime. The dot is described by the Anderson model with Rashba type spin-orbit interaction. The finite-U mean field slave boson technique is used to describe the transport characteristics, like heat conductance, thermopower, thermoelectric efficiency (figure of merit). The role of quantum interference effects in thermoelectric parameters is also analyzed.