{
  "id": "1002.0949",
  "version": "v1",
  "published": "2010-02-04T10:05:07.000Z",
  "updated": "2010-02-04T10:05:07.000Z",
  "title": "Effects due to backscattering and pseudogap features in graphene nanoribbons with single vacancies",
  "authors": [
    "I. Deretzis",
    "G. Fiori",
    "G. Iannaccone",
    "A. La Magna"
  ],
  "comment": "5 pages, 4 figures, accepted for publication at PRB",
  "journal": "Phys. Rev. B 81, 085427 (2010)",
  "doi": "10.1103/PhysRevB.81.085427",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We present a systematic study of electron backscattering phenomena during conduction for graphene nanoribbons with single-vacancy scatterers and dimensions within the capabilities of modern lithographic techniques. Our analysis builds upon an \\textit{ab initio} parameterized semiempirical model that breaks electron-hole symmetry and nonequilibrium Green's function methods for the calculation of the conductance distribution $g$. The underlying mechanism is based on wavefunction localizations and perturbations that in the case of the first $\\pi-\\pi{}^*$ plateau can give rise to impurity-like pseudogaps with both donor and acceptor characteristics. Confinement and geometry are crucial for the manifestation of such effects. Self-consistent quantum transport calculations characterize vacancies as local charging centers that can induce electrostatic inhomogeneities on the ribbon topology.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-02-04T10:05:07.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "72.10.Fk",
      "73.63.-b"
    ],
    "keywords": [
      "graphene nanoribbons",
      "single vacancies",
      "pseudogap features",
      "quantum transport calculations characterize vacancies",
      "self-consistent quantum transport calculations"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2010,
      "month": "Feb",
      "volume": 81,
      "number": 8,
      "pages": "085427"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010PhRvB..81h5427D"
    }
  }
}