{
  "id": "1012.1546",
  "version": "v3",
  "published": "2010-12-07T16:42:51.000Z",
  "updated": "2011-02-16T10:09:17.000Z",
  "title": "Depletion of carriers and negative differential conductivity in an intrinsic graphene under a dc electric field",
  "authors": [
    "P. N. Romanets",
    "F. T. Vasko"
  ],
  "comment": "8 pages, 10 figures, extended version",
  "journal": "Physical Review B 83, 205427 (2011)",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.dis-nn"
  ],
  "abstract": "The heating of carriers in an intrinsic graphene under an abrupt switching off a dc electric field is examined taking into account both the energy relaxation via acoustic and optic phonons and the interband generation-recombination processes. The later are caused by the interband transitions due to optical phonon modes and thermal radiation. Description of the temporal and steady-state responses, including the nonequilibrium concentration and energy as well as the current-voltage characteristics, is performed. At room temperature, a nearly-linear current-voltage characteristic and a slowly-varied concentration take place for fields up to -- 20 kV/cm. Since a predominant recombination of high-energy carriers due to optical phonon emission at low temperatures, a depletion of concentration takes place below -- 250 K. For lower temperatures the current tends to be saturated and a negative differential conductivity appears below -- 170 K in the region of fields -- 10 V/cm.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2011-02-16T10:09:17.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "72.80.Vp",
      "72.20.Ht"
    ],
    "keywords": [
      "dc electric field",
      "intrinsic graphene",
      "optical phonon",
      "interband generation-recombination processes",
      "concentration"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "doi": "10.1103/PhysRevB.83.205427",
      "year": 2011,
      "month": "May",
      "volume": 83,
      "number": 20,
      "pages": 205427
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvB..83t5427R"
    }
  }
}