{
  "id": "1001.2762",
  "version": "v1",
  "published": "2010-01-15T20:34:42.000Z",
  "updated": "2010-01-15T20:34:42.000Z",
  "title": "Coulomb screening and collective excitations in biased bilayer graphene",
  "authors": [
    "Xue-Feng Wang",
    "Tapash Chakraborty"
  ],
  "comment": "4 pages, 4 figures",
  "journal": "Phys. Rev. B 81, 081402(R) (2010).",
  "doi": "10.1103/PhysRevB.81.081402",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We have investigated the Coulomb screening properties and plasmon spectrum in a bilayer graphene under a perpendicular electric bias. The bias voltage applied between the two graphene layers opens a gap in the single particle energy spectrum and modifies the many-body correlations and collective excitations. The energy gap can soften the plasmon modes and lead to a crossover of the plasmons from a Landau damped mode to being undamped. Plasmon modes of long lifetime may be observable in experiments and may have potentials for device applications.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-01-15T20:34:42.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "71.10.-w",
      "75.10.Lp",
      "75.70.Ak",
      "71.70.Gm"
    ],
    "keywords": [
      "biased bilayer graphene",
      "collective excitations",
      "coulomb screening",
      "single particle energy spectrum",
      "plasmon modes"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2010,
      "month": "Feb",
      "volume": 81,
      "number": 8,
      "pages": "081402"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010PhRvB..81h1402W"
    }
  }
}