{
  "id": "1105.0274",
  "version": "v1",
  "published": "2011-05-02T09:29:44.000Z",
  "updated": "2011-05-02T09:29:44.000Z",
  "title": "Time-resolved charge detection in graphene quantum dots",
  "authors": [
    "J. Guettinger",
    "J. Seif",
    "C. Stampfer",
    "A. Capelli",
    "K. Ensslin",
    "T. Ihn"
  ],
  "comment": "8 pages, 6 figures",
  "journal": "Phys. Rev. B 83, 165445 (2011)",
  "doi": "10.1103/PhysRevB.83.165445",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We present real-time detection measurements of electron tunneling in a graphene quantum dot. By counting single electron charging events on the dot, the tunneling process in a graphene constriction and the role of localized states are studied in detail. In the regime of low charge detector bias we see only a single time-dependent process in the tunneling rate which can be modeled using a Fermi-broadened energy distribution of the carriers in the lead. We find a non-monotonic gate dependence of the tunneling coupling attributed to the formation of localized states in the constriction. Increasing the detector bias above 2 mV results in an increase of the dot-lead transition rate related to back-action of the charge detector current on the dot.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-05-02T09:29:44.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "72.80.Vp",
      "73.63.Kv",
      "73.50.Td",
      "73.23.Hk"
    ],
    "keywords": [
      "graphene quantum dot",
      "time-resolved charge detection",
      "low charge detector bias",
      "counting single electron charging events",
      "dot-lead transition rate"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2011,
      "month": "Apr",
      "volume": 83,
      "number": 16,
      "pages": 165445
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvB..83p5445G"
    }
  }
}