Poor Man's Scaling Approach to the Kondo Effect in a Single Quantum Dot Asymmetrically Attached to Ferromagnetic Leads with Non-Collinear Magnetizations
M. Wawrzyniak
Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
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Received: 7 06 2008;
The poor man's scaling technique is applied to the problem of electronic transport through a single quantum dot (with finite Coulomb repulsion) asymmetrically coupled to electrodes. The considered quantum dot is coupled to ferromagnetic electrodes, whose magnetic moments are non-collinear. The analysis and numerical illustration of spin splitting of the dot level as well as of the Kondo temperature on the coupling asymmetry is presented and discussed.
DOI: 10.12693/APhysPolA.114.1421
PACS numbers: 75.20.Hr, 72.15.Qm, 72.25.-b, 73.23.Hk