{
  "id": "cond-mat/0607167",
  "version": "v3",
  "published": "2006-07-06T15:29:35.000Z",
  "updated": "2006-12-05T13:10:47.000Z",
  "title": "Specific Heat of a Fractional Quantum Hall System",
  "authors": [
    "F. Schulze-Wischeler",
    "U. Zeitler",
    "C. v. Zobeltitz",
    "F. Hohls",
    "D. Reuter",
    "A. D. Wieck",
    "H. Frahm",
    "R. J. Haug"
  ],
  "comment": "4 pages, 4 figures (version is 1. resubmission: Added a paragraph to include the problems which arise by the weak temperature dependence at \\nu = 1/2, updated affiliation)",
  "doi": "10.1103/PhysRevB.76.153311",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Using a time-resolved phonon absorption technique, we have measured the specific heat of a two-dimensional electron system in the fractional quantum Hall effect regime. For filling factors $\\nu = 5/3, 4/3, 2/3, 3/5, 4/7, 2/5$ and 1/3 the specific heat displays a strong exponential temperature dependence in agreement with excitations across a quasi-particle gap. At filling factor $\\nu = 1/2$ we were able to measure the specific heat of a composite fermion system for the first time. The observed linear temperature dependence on temperature down to $T = 0.14$ K agrees well with early predictions for a Fermi liquid of composite fermions.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2006-12-05T13:10:47.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "fractional quantum hall system",
      "fractional quantum hall effect regime",
      "strong exponential temperature dependence",
      "composite fermion",
      "specific heat displays"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}