{
  "id": "1103.5523",
  "version": "v1",
  "published": "2011-03-29T01:21:49.000Z",
  "updated": "2011-03-29T01:21:49.000Z",
  "title": "Relaxation of Optically Excited Carriers in Graphene",
  "authors": [
    "Raseong Kim",
    "Vasili Perebeinos",
    "Phaedon Avouris"
  ],
  "comment": "4 pages, 4 figures",
  "journal": "Phys. Rev. B 84, 075449 (2011)",
  "doi": "10.1103/PhysRevB.84.075449",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We explore the relaxation of photo-excited graphene by solving a transient Boltzmann transport equation with electron-phonon (e-ph) and electron-electron (e-e) scattering. Simulations show that when the excited carriers are relaxed by e-ph scattering only, a population inversion can be achieved at energies determined by the photon energy. However, e-e scattering quickly thermalizes the carrier energy distributions washing out the negative optical conductivity peaks. The relaxation rates and carrier multiplication effects are presented as a function of photon energy and dielectric constant.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-03-29T01:21:49.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "78.67.Wj",
      "78.20.Bh",
      "72.20.Jv",
      "72.80.Vp"
    ],
    "keywords": [
      "optically excited carriers",
      "photon energy",
      "transient boltzmann transport equation",
      "carrier multiplication effects",
      "carrier energy distributions"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2011,
      "month": "Aug",
      "volume": 84,
      "number": 7,
      "pages": "075449"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvB..84g5449K"
    }
  }
}