{
  "id": "cond-mat/0502481",
  "version": "v1",
  "published": "2005-02-19T17:27:23.000Z",
  "updated": "2005-02-19T17:27:23.000Z",
  "title": "Variable range cotunneling and conductivity of a granular metal",
  "authors": [
    "M. V. Feigel'man",
    "A. S. Ioselevich"
  ],
  "comment": "Submitted to JETP Letters",
  "doi": "10.1134/1.1931015",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.dis-nn"
  ],
  "abstract": "The Efros-Shklovskii law for the conductivity of granular metals is interpreted as a result of a variable range cotunneling process. The cotunneling between distant resonant grains is predominantly elastic at low T << T_c, while it is inelastic (i.e., accompanied by creation of electron-hole pairs on a string of intermediate non-resonant grains) at T > T_c. The corresponding E-S temperature T_ES in the latter case is slightly (logarithmically) T-dependent. The magnetoresistance in the two cases is different: it may be relatively strong and negative at T much below T_c, while at T>T_c it is suppressed due to inelastic processes which destroy the interference.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2005-02-19T17:27:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "granular metal",
      "conductivity",
      "distant resonant grains",
      "efros-shklovskii law",
      "inelastic processes"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}