{
  "id": "1104.2764",
  "version": "v1",
  "published": "2011-04-14T13:55:27.000Z",
  "updated": "2011-04-14T13:55:27.000Z",
  "title": "A pertubative approach to the Kondo effect in magnetic atoms on nonmagnetic substrates",
  "authors": [
    "Aaron Hurley",
    "Nadjib Baadji",
    "Stefano Sanvito"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Recent experimental advances in scanning tunneling microscopy make the measurement of the conductance spectra of isolated and magnetically coupled atoms on nonmagnetic substrates possible. Notably these spectra are characterized by a competition between the Kondo effect and spin-flip inelastic electron tunneling. In particular they include Kondo resonances and a logarithmic enhancement of the conductance at voltages corresponding to magnetic excitations, two features that cannot be captured by second order perturbation theory in the electron-spin coupling. We have now derived a third order analytic expression for the electron-spin self-energy, which can be readily used in combination with the non-equilibrium Green's function scheme for electron transport at finite bias. We demonstrate that our method is capable of quantitative description the competition between Kondo resonances and spin-flip inelastic electron tunneling at a computational cost significantly lower than that of other approaches. The examples of Co and Fe on CuN are discussed in detail.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-04-14T13:55:27.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "72.15.Qm",
      "71.10.-w",
      "73.40.Gk",
      "68.37.Ef"
    ],
    "keywords": [
      "kondo effect",
      "nonmagnetic substrates",
      "magnetic atoms",
      "pertubative approach",
      "spin-flip inelastic electron tunneling"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.84.115435",
      "journal": "Physical Review B",
      "year": 2011,
      "month": "Sep",
      "volume": 84,
      "number": 11,
      "pages": 115435
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvB..84k5435H"
    }
  }
}