{
  "id": "1102.0265",
  "version": "v2",
  "published": "2011-02-01T20:27:13.000Z",
  "updated": "2011-07-04T19:53:32.000Z",
  "title": "Spin-Polarized to Valley-Polarized Transition in Graphene Bilayers at $ν=0$ in High Magnetic Fields",
  "authors": [
    "Seyoung Kim",
    "Kayoung Lee",
    "Emanuel Tutuc"
  ],
  "comment": "5 pages, 5 figures",
  "journal": "Phys. Rev. Lett. 107, 016803 (2011)",
  "doi": "10.1103/PhysRevLett.107.016803",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el"
  ],
  "abstract": "We investigate the transverse electric field ($E$) dependence of the $\\nu$=0 quantum Hall state (QHS) in dual-gated graphene bilayers in high magnetic fields. The longitudinal resistivity ($\\rho_{xx}$) measured at $\\nu$=0 shows an insulating behavior which is strongest in the vicinity of $E$=0, and at large $E$-fields. At a fixed perpendicular magnetic field ($B$), the $\\nu$=0 QHS undergoes a transition as a function of $E$, marked by a minimum, temperature-independent $\\rho_{xx}$. This observation is explained by a transition from a spin polarized $\\nu$=0 QHS at small $E$-fields, to a valley (layer) polarized $\\nu$=0 QHS at large $E$-fields. The $E$-field value at which the transition occurs has a linear dependence on $B$",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-07-04T19:53:32.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.21.-b",
      "73.22.Gk",
      "73.43.-f"
    ],
    "keywords": [
      "high magnetic fields",
      "graphene bilayers",
      "valley-polarized transition",
      "quantum hall state",
      "transverse electric field"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2011,
      "month": "Jul",
      "volume": 107,
      "number": 1,
      "pages": "016803"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvL.107a6803K"
    }
  }
}