Kondo effect with non collinear polarized leads: a numerical renormalization group analysis
Mesoscale and Nanoscale Physics
2009-11-11 v2
Abstract
The Kondo effect in quantum dots attached to ferromagnetic leads with general polarization directions is studied combining poor man scaling and Wilson's numerical renormalization group methods. We show that polarized electrodes will lead in general to a splitting of the Kondo resonance in the quantum dot density of states except for a small range of angles close to the antiparallel case. We also show that an external magnetic field is able to compensate this splitting and restore the unitary limit. Finally, we study the electronic transport through the device in various limiting cases.
Cite
@article{arxiv.cond-mat/0607794,
title = {Kondo effect with non collinear polarized leads: a numerical renormalization group analysis},
author = {P. Simon and P. S. Cornaglia and D. Feinberg and C. A. Balseiro},
journal= {arXiv preprint arXiv:cond-mat/0607794},
year = {2009}
}
Comments
6 pages, 4 figures, final version