{
  "id": "0707.0236",
  "version": "v2",
  "published": "2007-07-02T19:28:05.000Z",
  "updated": "2007-07-03T04:16:20.000Z",
  "title": "Fractional Quantum Hall Effect in the Second Landau Level",
  "authors": [
    "H. C. Choi",
    "W. Kang",
    "S. Das Sarma",
    "L. N. Pfeiffer",
    "K. W. West"
  ],
  "comment": "5 pages, 3 figures",
  "journal": "Phys. Rev. B 77, 081301(R) (2008)",
  "doi": "10.1103/PhysRevB.77.081301",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We present activation gap measurements of the fractional quantum Hall effect (FQHE) in the second Landau level. Signatures for 14 (5) distinct incompressible FQHE states are seen in a high (low) mobility sample with the enigmatic 5/2 even denominator FQHE having a large activation gap of $\\sim$600 ($\\sim$300mK) in the high (low) mobility sample. Our measured large relative gaps for 5/2, 7/3, and 8/3 FQHE indicate emergence of exotic FQHE correlations in the second Ladau level, possibly quite different from the well-known lowest Landau level Laughlin correlations. Our measured 5/2 gap is found to be in reasonable agreement with the theoretical gap once finite width and disorder broadening corrections are taken into account.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-07-03T04:16:20.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.-f",
      "73.21.Fg"
    ],
    "keywords": [
      "fractional quantum hall effect",
      "second landau level",
      "lowest landau level laughlin correlations"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2008,
      "month": "Feb",
      "volume": 77,
      "number": 8,
      "pages": "081301"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008PhRvB..77h1301C"
    }
  }
}