Non-Crossing Approximation Study of Multi-Orbital Kondo Effect in Quantum Dot Systems

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dc.creatorKita, Tomoko
dc.creatorSakano, Rui
dc.creatorOhashi, Takuma
dc.creatorSuga, Sei-ichiro
dc.date2006-05-10
dc.date.accessioned2026-07-07T07:08:53Z
dc.date.available2026-07-07T07:08:53Z
dc.descriptionWe study the three-orbital Kondo effect in quantum dot (QD) systems by applying the non-crossing approximation to the three-orbital Anderson impurity model. By investigating the tunneling conductance through a QD, we show that the competition between the Hund-coupling and the orbital level-splitting gives rise to characteristic behavior in transport properties. It is found that the Hund-coupling becomes more important in the three-orbital case than in the two-orbital case. We also show that the enhancement of Kondo temperature due to the singlet-triplet mechanism suggested for the two-orbital model tends to be suppressed by the existence of the third orbital.
dc.description6 pages, 5 figures, submitted to the Proceedings of the International Symposium on Mesoscopic Superconductivity and Spintronics 2006 (MS+S2006)
dc.identifierhttps://arxiv.org/abs/cond-mat/0605285
dc.identifierhttp://arxiv.org/abs/cond-mat/0605285
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/110873
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleNon-Crossing Approximation Study of Multi-Orbital Kondo Effect in Quantum Dot Systems
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