{
  "id": "1101.3892",
  "version": "v3",
  "published": "2011-01-20T13:09:59.000Z",
  "updated": "2011-10-18T08:38:39.000Z",
  "title": "Dynamical symmetry breaking in vibration-assisted transport through nanostructures",
  "authors": [
    "Abdullah Yar",
    "Andrea Donarini",
    "Sonja Koller",
    "Milena Grifoni"
  ],
  "comment": "10 pages, 11 figures, published version",
  "journal": "Physical Review B, 84, 115432 (2011)",
  "doi": "10.1103/PhysRevB.84.115432",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el"
  ],
  "abstract": "A theoretical model of a single molecule coupled to many vibronic modes is presented. At low energies, transport is dominated by electron-vibron processes where transfer of an electron through the dot is accompanied by the excitation/emission of quanta (vibrons). Because the frequency of the $n$th mode is taken as an $n$th multiple of the frequency of the fundamental mode, several energetically degenerate or quasi-degenerate vibronic configurations can contribute to transport. We investigate the consequences of strong electron-vibron coupling in a fully \\emph{symmetric} set-up. Several striking features are predicted. In particular, a gate-asymmetry and pronounced negative differential conductance features are observed. We attribute these features to the presence of slow channels originating from the interplay of Franck-Condon suppression of transport channels and spin/orbital degeneracies.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2011-10-18T08:38:39.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.-b",
      "85.85.+j",
      "73.63.Kv"
    ],
    "keywords": [
      "dynamical symmetry breaking",
      "vibration-assisted transport",
      "nanostructures",
      "pronounced negative differential conductance features",
      "quasi-degenerate vibronic configurations"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2011,
      "month": "Sep",
      "volume": 84,
      "number": 11,
      "pages": 115432
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvB..84k5432Y"
    }
  }
}