{
  "id": "0809.2667",
  "version": "v2",
  "published": "2008-09-16T09:37:19.000Z",
  "updated": "2009-07-25T11:00:27.000Z",
  "title": "Collective modes of doped graphene and a standard 2DEG in a strong magnetic field: linear magneto-plasmons versus magneto-excitons",
  "authors": [
    "R. Roldan",
    "J. -N. Fuchs",
    "M. O. Goerbig"
  ],
  "comment": "8 pages, 3 figures. Version accepted for publication in Phys. Rev. B",
  "journal": "Phys. Rev. B 80, 085408 (2009)",
  "doi": "10.1103/PhysRevB.80.085408",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "A doped graphene layer in the integer quantum Hall regime reveals a highly unusual particle-hole excitation spectrum, which is calculated from the dynamical polarizability in the random phase approximation. We find that the elementary neutral excitations in graphene in a magnetic field are unlike those of a standard two-dimensional electron gas (2DEG): in addition to the upper-hybrid mode, the particle-hole spectrum is reorganized in linear magneto-plasmons that disperse roughly parallel to $\\omega=v_F q$, instead of the usual horizontal (almost dispersionless) magneto-excitons. These modes could be detected in an inelastic light scattering experiment.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2009-07-25T11:00:27.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.Lp",
      "78.30.Na",
      "81.05.Uw"
    ],
    "keywords": [
      "strong magnetic field",
      "linear magneto-plasmons",
      "doped graphene",
      "standard 2deg",
      "collective modes"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2009,
      "month": "Aug",
      "volume": 80,
      "number": 8,
      "pages": "085408"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvB..80h5408R"
    }
  }
}