{
  "id": "cond-mat/9812190",
  "version": "v2",
  "published": "1998-12-11T07:15:50.000Z",
  "updated": "1999-07-08T16:25:35.000Z",
  "title": "Bulk Tunneling at Integer Quantum Hall Transitions",
  "authors": [
    "Ziqiang Wang",
    "Shanhui Xiong"
  ],
  "comment": "4 pages, revtex, final version to appear in Phys. Rev. Lett",
  "journal": "Phys. Rev. Lett. 83, 828 (1999).",
  "doi": "10.1103/PhysRevLett.83.828",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The tunneling into the {\\em bulk} of a 2D electron system (2DES) in strong magnetic field is studied near the integer quantum Hall transitions. We present a nonperturbative calculation of the tunneling density of states (TDOS) for both Coulomb and short-ranged electron-electron interactions. In the case of Coulomb interaction, the TDOS exhibits a 2D quantum Coulomb gap behavior, $\\nu(\\ve)=C_Q\\ave/e^4$, with $C_Q$ a nonuniversal coefficient of quantum mechanical origin. For short-ranged interactions, we find that the TDOS at low bias follows $\\nu(\\ve)/\\nu (0)=1+(\\ave/\\ve_0)^\\gamma$, where $\\gamma$ is a universal exponent determined by the scaling dimension of short-ranged interactions.",
  "revisions": [
    {
      "version": "v2",
      "updated": "1999-07-08T16:25:35.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "integer quantum hall transitions",
      "bulk tunneling",
      "2d quantum coulomb gap behavior",
      "strong magnetic field",
      "short-ranged interactions"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}