{
  "id": "1208.4838",
  "version": "v1",
  "published": "2012-08-23T19:47:34.000Z",
  "updated": "2012-08-23T19:47:34.000Z",
  "title": "Nonlinear response in overlapping and separated Landau levels of GaAs quantum wells",
  "authors": [
    "A. T. Hatke",
    "M. A. Zudov",
    "L. N. Pfeiffer",
    "K. W. West"
  ],
  "comment": "5 pages, 5 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We have studied magnetotransport properties of a high-mobility two-dimensional electron system subject to weak electric fields. At low magnetic field $B$, the differential resistivity acquires a correction $\\delta r \\propto -\\lambda^2 j^2/B^2$, where $\\lambda$ is the Dingle factor and $j$ is the current density, in agreement with theoretical predictions. At higher magnetic fields, however, $\\delta r$ becomes $B$-independent, $\\delta r \\propto -j^2$. While the observed change in behavior can be attributed to a crossover from overlapping to separated Landau levels, full understanding of this behavior remains a subject of future theories.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-08-23T19:47:34.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.Qt",
      "73.63.Hs",
      "73.21.-b",
      "73.40.-c"
    ],
    "keywords": [
      "separated landau levels",
      "gaas quantum wells",
      "nonlinear response",
      "high-mobility two-dimensional electron system subject",
      "overlapping"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.86.081307",
      "journal": "Physical Review B",
      "year": 2012,
      "month": "Aug",
      "volume": 86,
      "number": 8,
      "pages": "081307"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2012PhRvB..86h1307H"
    }
  }
}