Thermoelectric and Interference Effects in a Kondo-Correlated Quantum Dot with Rashba Spin-Orbit Coupling
Ł. Karwackia, P. Trocha a and J. Barnaśa,b
aFaculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
bInstitute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
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Thermoelectric effects in spin-polarized transport through a strongly correlated quantum dot coupled to two ferromagnetic leads is investigated theoretically by means of the finite-U slave boson technique. The dot is coupled to the leads both symmetrically via the spin-conserving tunneling processes and asymmetrically via spin-nonconserving Rashba-induced tunneling terms. The asymmetric coupling leads to various interference effects which modify transport properties. We have analyzed such thermoelectric coefficients like the electronic contribution to heat conductance κ, thermopower S, and thermoelectric efficiency ZT.

DOI: 10.12693/APhysPolA.124.901
PACS numbers: 73.23.-b, 73.63.Kv 72.15.Qm, 85.35.Ds