{
  "id": "1011.0888",
  "version": "v1",
  "published": "2010-11-03T14:09:43.000Z",
  "updated": "2010-11-03T14:09:43.000Z",
  "title": "Evolution of Microscopic Localization in Graphene in a Magnetic Field from Scattering Resonances to Quantum Dots",
  "authors": [
    "Suyong Jung",
    "Gregory M. Rutter",
    "Nikolai N. Klimov",
    "David B. Newell",
    "Irene Calizo",
    "Angela R. Hight-Walker",
    "Nikolai B. Zhitenev",
    "Joseph A. Stroscio"
  ],
  "comment": "to be published in Nature Physics",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Graphene is a unique two-dimensional material with rich new physics and great promise for applications in electronic devices. Physical phenomena such as the half-integer quantum Hall effect and high carrier mobility are critically dependent on interactions with impurities/substrates and localization of Dirac fermions in realistic devices. We microscopically study these interactions using scanning tunneling spectroscopy (STS) of exfoliated graphene on a SiO2 substrate in an applied magnetic field. The magnetic field strongly affects the electronic behavior of the graphene; the states condense into welldefined Landau levels with a dramatic change in the character of localization. In zero magnetic field, we detect weakly localized states created by the substrate induced disorder potential. In strong magnetic field, the two-dimensional electron gas breaks into a network of interacting quantum dots formed at the potential hills and valleys of the disorder potential. Our results demonstrate how graphene properties are perturbed by the disorder potential; a finding that is essential for both the physics and applications of graphene.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-11-03T14:09:43.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum dots",
      "microscopic localization",
      "scattering resonances",
      "disorder potential",
      "two-dimensional electron gas breaks"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1038/nphys1866",
      "journal": "Nature Physics",
      "year": 2011,
      "month": "Mar",
      "volume": 7,
      "number": 3,
      "pages": 245
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011NatPh...7..245J"
    }
  }
}