{
  "id": "1012.0374",
  "version": "v2",
  "published": "2010-12-02T02:57:14.000Z",
  "updated": "2010-12-03T02:52:43.000Z",
  "title": "Imaging charge density fluctuations in graphene using Coulomb blockade spectroscopy",
  "authors": [
    "A. Deshpande",
    "W. Bao",
    "H. Zhang",
    "Z. Zhao",
    "C. N. Lau",
    "B. J. LeRoy"
  ],
  "comment": "5 pages, 5 figures",
  "journal": "Phys. Rev. B 83, 155409 (2011)",
  "doi": "10.1103/PhysRevB.83.155409",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Using scanning tunneling microscopy, we have imaged local charge density fluctuations in monolayer graphene. By placing a small gold nanoparticle on the end of the STM tip, a charge sensor is created. By raster scanning the tip over the surface and using Coulomb blockade spectroscopy, we map the local charge on the graphene. We observe a series of electron and hole doped puddles with a characteristic length scale of about 20 nm. Theoretical calculations for the correlation length of the puddles based on the number of impurities are in agreement with our measurements.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2010-12-03T02:52:43.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.22.Pr",
      "68.37.Ef"
    ],
    "keywords": [
      "coulomb blockade spectroscopy",
      "imaging charge density fluctuations",
      "imaged local charge density fluctuations",
      "small gold nanoparticle",
      "characteristic length scale"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2011,
      "month": "Apr",
      "volume": 83,
      "number": 15,
      "pages": 155409
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvB..83o5409D"
    }
  }
}