{
  "id": "cond-mat/0602649",
  "version": "v1",
  "published": "2006-02-28T05:55:11.000Z",
  "updated": "2006-02-28T05:55:11.000Z",
  "title": "Landau Level Splitting in Graphene in High Magnetic Fields",
  "authors": [
    "Y. Zhang",
    "Z. Jiang",
    "J. P. Small",
    "M. S. Purewal",
    "Y. -W. Tan",
    "M. Fazlollahi",
    "J. D. Chudow",
    "J. A. Jaszczak",
    "H. L. Stormer",
    "P. Kim"
  ],
  "comment": "11 pages including 4 figures, to appear in PRL",
  "journal": "Phys. Rev. Lett., 96, 136806 (2006)",
  "doi": "10.1103/PhysRevLett.96.136806",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el"
  ],
  "abstract": "The quantum Hall (QH) effect in two-dimensional (2D) electrons and holes in high quality graphene samples is studied in strong magnetic fields up to 45 T. QH plateaus at filling factors $\\nu=0,\\pm 1,\\pm 4$ are discovered at magnetic fields $B>$20 T, indicating the lifting of the four-fold degeneracy of the previously observed QH states at $\\nu=\\pm(|n|+1/2)$, where $n$ is the Landau level index. In particular, the presence of the $\\nu=0, \\pm 1$ QH plateaus indicates that the Landau level at the charge neutral Dirac point splits into four sublevels, lifting sublattice and spin degeneracy. The QH effect at $\\nu=\\pm 4$ is investigated in tilted magnetic field and can be attributed to lifting of the spin-degeneracy of the $n=1$ Landau level.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2006-02-28T05:55:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "high magnetic fields",
      "landau level splitting",
      "charge neutral dirac point splits",
      "qh plateaus",
      "high quality graphene samples"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}