{
  "id": "cond-mat/0605285",
  "version": "v1",
  "published": "2006-05-10T21:58:51.000Z",
  "updated": "2006-05-10T21:58:51.000Z",
  "title": "Non-Crossing Approximation Study of Multi-Orbital Kondo Effect in Quantum Dot Systems",
  "authors": [
    "Tomoko Kita",
    "Rui Sakano",
    "Takuma Ohashi",
    "Sei-ichiro Suga"
  ],
  "comment": "6 pages, 5 figures, submitted to the Proceedings of the International Symposium on Mesoscopic Superconductivity and Spintronics 2006 (MS+S2006)",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el"
  ],
  "abstract": "We 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.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2006-05-10T21:58:51.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum dot systems",
      "multi-orbital kondo effect",
      "non-crossing approximation study",
      "three-orbital anderson impurity model",
      "three-orbital kondo effect"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2006cond.mat..5285K"
    }
  }
}