{
  "id": "1405.4938",
  "version": "v1",
  "published": "2014-05-20T03:18:20.000Z",
  "updated": "2014-05-20T03:18:20.000Z",
  "title": "Clustered impurities and carrier transport in supported graphene",
  "authors": [
    "N. Sule",
    "S. C. Hagness",
    "I. Knezevic"
  ],
  "journal": "Phys. Rev. B 89, 165402 (2014)",
  "doi": "10.1103/PhysRevB.89.165402",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We investigate the effects of charged impurity distributions and carrier-carrier interactions on electronic transport in graphene on SiO$_2$ by employing a self-consistent coupled simulation of carrier transport and electrodynamics. We show that impurity clusters of characteristic width 40--50 nm generate electron--hole puddles of experimentally observed sizes. In the conductivity versus carrier density dependence, the residual conductivity and the linear-region slope are determined by the impurity distribution, and the measured slope can be used to estimate the impurity density in experiment. Furthermore, we show that the high-density sublinearity in the conductivity stems from carrier-carrier interactions.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-05-20T03:18:20.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "72.80.Vp",
      "81.05.ue",
      "72.10.-d"
    ],
    "keywords": [
      "carrier transport",
      "supported graphene",
      "clustered impurities",
      "carrier-carrier interactions",
      "impurity distribution"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2014,
      "month": "Apr",
      "volume": 89,
      "number": 16,
      "pages": 165402
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvB..89p5402S"
    }
  }
}