NRG study of the Kondo effect in the presence of itinerant-electron ferromagnetism

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dc.creatorMartinek, J.
dc.creatorSindel, M.
dc.creatorBorda, L.
dc.creatorBarnaś, J.
dc.creatorKönig, J.
dc.creatorSchön, G.
dc.creatorvon Delft, J.
dc.date2003-04-16
dc.date2004-01-29
dc.date.accessioned2026-07-07T02:50:50Z
dc.date.available2026-07-07T02:50:50Z
dc.descriptionThe Kondo effect in quantum dots (QDs) - artificial magnetic impurities - attached to ferromagnetic leads is studied with the numerical renormalization group (NRG) method. It is shown that the QD level is spin-split due to presence of ferromagnetic electrodes, leading to a suppression of the Kondo effect. We find that the Kondo effect can be restored by compensating this splitting with a magnetic field. Although the resulting Kondo resonance then has an unusual spin asymmetry with a reduced Kondo temperature, the ground state is still a locally-screened state, describable by Fermi liquid theory and a generalized Friedel sum rule, and transport in the unitary limit is not spin dependent.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0304385
dc.identifierhttp://arxiv.org/abs/cond-mat/0304385
dc.identifierPhys. Rev. Lett. 91, 247202 (2003)
dc.identifierdoi:10.1103/PhysRevLett.91.247202
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21241
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleNRG study of the Kondo effect in the presence of itinerant-electron ferromagnetism
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