{
  "id": "0901.2803",
  "version": "v2",
  "published": "2009-01-19T10:32:13.000Z",
  "updated": "2009-06-15T10:14:08.000Z",
  "title": "Pseudo-zero-mode Landau levels and collective excitations in bilayer graphene",
  "authors": [
    "K. Shizuya"
  ],
  "comment": "11 pages, 3 figures, revtex, published version",
  "journal": "Phys. Rev. B 79, 165402 (2009)",
  "doi": "10.1103/PhysRevB.79.165402",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Bilayer graphene in a magnetic field supports eight zero-energy Landau levels, which, as a tunable band gap develops, split into two nearly-degenerate quartets separated by the band gap. A close look is made into the properties of such an isolated quartet of pseudo-zero-mode levels at half filling in the presence of an in-plane electric field and the Coulomb interaction, with focus on revealing further controllable features in bilayer graphene. The half-filled pseudo-zero-mode levels support, via orbital level mixing, charge carriers with nonzero electric moment, which would lead to field-induced level splitting and the current-induced quantum Hall effect. It is shown that the Coulomb interaction enhances the effect of the in-plane field and their interplay leads to rich spectra of collective excitations, pseudospin waves, accessible by microwave experiments; also a duality in the excitation spectra is revealed.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2009-06-15T10:14:08.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.-f",
      "71.10.Pm",
      "77.22.Ch"
    ],
    "keywords": [
      "pseudo-zero-mode landau levels",
      "bilayer graphene",
      "collective excitations",
      "band gap",
      "in-plane electric field"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2009,
      "month": "Apr",
      "volume": 79,
      "number": 16,
      "pages": 165402
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvB..79p5402S"
    }
  }
}