{
  "id": "1405.6188",
  "version": "v2",
  "published": "2014-05-23T19:37:39.000Z",
  "updated": "2014-06-04T16:22:39.000Z",
  "title": "Competing quantum Hall phases in the second Landau level in low density limit",
  "authors": [
    "W. Pan",
    "A. Serafin",
    "J. S. Xia",
    "L. Yin",
    "N. S. Sullivan",
    "K. W. Baldwin",
    "K. W. West",
    "L. N. Pfeiffer",
    "D. C. Tsui"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We present in this Letter the results from two high quality, low density GaAs quantum wells. In sample A of electron density n=5.0x10^10 cm^-2, anisotropic electronic transport behavior was observed at \\nu=7/2 in the second Landau level. We believe that the anisotropy is due to the large Landau level mixing effect in this sample. In sample B of density 4.1x10^10 cm^-2, strong 8/3, 5/2, and 7/3 fractional quantum Hall states were observed. Furthermore, our energy gap data suggest that, similar to the 8/3 state, the 5/2 state may also be spin unpolarized in the low density limit. The results from both samples show that the strong electron-electron interactions and a large Landau level mixing effect play an import role in the competing ground states in the second landau level.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2014-06-04T16:22:39.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.Nq",
      "72.20.My",
      "73.20.Mf"
    ],
    "keywords": [
      "second landau level",
      "low density limit",
      "competing quantum hall phases",
      "large landau level mixing effect",
      "density gaas quantum wells"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.89.241302",
      "journal": "Physical Review B",
      "year": 2014,
      "month": "Jun",
      "volume": 89,
      "number": 24,
      "pages": 241302
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvB..89x1302P"
    }
  }
}