{
  "id": "0809.3836",
  "version": "v1",
  "published": "2008-09-23T01:39:24.000Z",
  "updated": "2008-09-23T01:39:24.000Z",
  "title": "Ground state and edge excitations of quantum Hall liquid at filling factor 2/3",
  "authors": [
    "Zi-Xiang Hu",
    "Hua Chen",
    "Kun Yang",
    "E. H. Rezayi",
    "Xin Wan"
  ],
  "comment": "12 pages, 13 figures",
  "journal": "Phys. Rev. B 78, 235315 (2008)",
  "doi": "10.1103/PhysRevB.78.235315",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We present a numerical study of fractional quantum Hall liquid at Landau level filling factor $\\nu=2/3$ in a microscopic model including long-range Coulomb interaction and edge confining potential, based on the disc geometry. We find the ground state is accurately described by the particle-hole conjugate of a $\\nu=1/3$ Laughlin state. We also find there are two counter-propagating edge modes, and the velocity of the forward-propagating mode is larger than the backward-propagating mode. The velocities have opposite responses to the change of the background confinement potential. On the other hand changing the two-body Coulomb potential has qualitatively the same effect on the velocities; for example we find increasing layer thickness (which softens of the Coulomb interaction) reduces both the forward mode and the backward mode velocities.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2008-09-23T01:39:24.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.Lp",
      "73.43.Cd",
      "71.10.Pm"
    ],
    "keywords": [
      "ground state",
      "edge excitations",
      "fractional quantum hall liquid",
      "background confinement potential",
      "long-range coulomb interaction"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2008,
      "month": "Dec",
      "volume": 78,
      "number": 23,
      "pages": 235315
    },
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008PhRvB..78w5315H"
    }
  }
}