{
  "id": "1304.4897",
  "version": "v1",
  "published": "2013-04-17T17:54:05.000Z",
  "updated": "2013-04-17T17:54:05.000Z",
  "title": "Phase-space for the breakdown of the quantum Hall effect in epitaxial graphene",
  "authors": [
    "J. A. Alexander-Webber",
    "A. M. R. Baker",
    "T. J. B. M. Janssen",
    "A. Tzalenchuk",
    "S. Lara-Avila",
    "S. Kubatkin",
    "R. Yakimova",
    "B. A. Piot",
    "D. K. Maude",
    "R. J. Nicholas"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We report the phase-space defined by the quantum Hall effect breakdown in polymer gated epitaxial graphene on SiC (SiC/G) as a function of temperature, current, carrier density, and magnetic fields up to 30T. At 2K breakdown currents ($I_c$) almost two orders of magnitude greater than in GaAs devices are observed. The phase boundary of the dissipationless state ($\\rho_{xx}=0$) shows a (1-$(T/T_c)^2$) dependence and persists up to $T_c>45K$ at 29T. With magnetic field $I_c$ was found to increase $\\propto B^{3/2}$ and $T_c \\propto B^{1.88}$. As the Fermi energy approaches the Dirac point, the $\\nu=2$ quantized Hall plateau appears continuously from fields as low as 1T up to at least 19T due to a strong magnetic field dependence of the carrier density.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-04-17T17:54:05.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "72.80.Vp",
      "72.10.Di",
      "73.43.Qt"
    ],
    "keywords": [
      "epitaxial graphene",
      "hall plateau appears",
      "phase-space",
      "quantum hall effect breakdown",
      "carrier density"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevLett.111.096601",
      "journal": "Physical Review Letters",
      "year": 2013,
      "month": "Aug",
      "volume": 111,
      "number": 9,
      "pages": "096601"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013PhRvL.111i6601A"
    }
  }
}