{
  "id": "cond-mat/9909011",
  "version": "v2",
  "published": "1999-09-01T15:02:29.000Z",
  "updated": "1999-12-03T11:41:05.000Z",
  "title": "Tunneling measurements of the coulomb pseudogap in a two-dimensional electron system in a quantizing magnetic field",
  "authors": [
    "E. V. Deviatov",
    "A. A. Shashkin",
    "V. T. Dolgopolov",
    "W. Hansen",
    "M. Holland"
  ],
  "comment": "7 pages, 9 figures included. Accepted to PRB",
  "doi": "10.1103/PhysRevB.61.2939",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We study the Coulomb pseudogap for tunneling into the two-dimensional electron system of high-mobility (Al,Ga)As/GaAs heterojunctions subjected to a quantizing magnetic field at filling factor $\\nu \\leq 1$. Tunnel current-voltage characteristics show that for the double maximum observed in the tunnel resistance at $\\nu \\approx 1$ the pseudogap is linear in energy with a slope that depends on filling factor, magnetic field, and temperature. We give a qualitative account of the filling factor dependence of the pseudogap slope and we confirm the recently reported appearance of another relaxation time for tunneling at $\\nu \\approx 1$. For the tunnel resistance peaks at $\\nu=1/3$ and 2/3 a completely different behaviour of the current-voltage curves is found and interpreted as manifestation of the fractional gap.",
  "revisions": [
    {
      "version": "v2",
      "updated": "1999-12-03T11:41:05.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "two-dimensional electron system",
      "quantizing magnetic field",
      "coulomb pseudogap",
      "tunneling measurements",
      "filling factor"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}