{
  "id": "0806.0436",
  "version": "v1",
  "published": "2008-06-03T05:29:47.000Z",
  "updated": "2008-06-03T05:29:47.000Z",
  "title": "Ballistic Hot Electron Transport in Graphene",
  "authors": [
    "Wang-Kong Tse",
    "E. H. Hwang",
    "S. Das Sarma"
  ],
  "comment": "4 pages",
  "journal": "Appl. Phys. Lett. 93, 023128 (2008)",
  "doi": "10.1063/1.2956669",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We theoretically study the inelastic scattering rate and the carrier mean free path for energetic hot electrons in graphene, including both electron-electron and electron-phonon interactions. Taking account of optical phonon emission and electron-electron scattering, we find that the inelastic scattering time $\\tau \\sim 10^{-2}-10^{-1} \\mathrm{ps}$ and the mean free path $l \\sim 10-10^2 \\mathrm{nm}$ for electron densities $n = 10^{12}-10^{13} \\mathrm{cm}^{-2}$. In particular, we find that the mean free path exhibits a finite jump at the phonon energy $200 \\mathrm{meV}$ due to electron-phonon interaction. Our results are directly applicable to device structures where ballistic transport is relevant with inelastic scattering dominating over elastic scattering.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2008-06-03T05:29:47.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.Ad",
      "72.20.Ht",
      "73.63.-b",
      "71.38.-k",
      "63.22.-m",
      "61.48.-c"
    ],
    "keywords": [
      "ballistic hot electron transport",
      "inelastic scattering",
      "electron-phonon interaction",
      "carrier mean free path",
      "energetic hot electrons"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Applied Physics Letters",
      "year": 2008,
      "month": "Jul",
      "volume": 93,
      "number": 2,
      "pages": "023128"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008ApPhL..93b3128T"
    }
  }
}