{
  "id": "0901.3959",
  "version": "v2",
  "published": "2009-01-26T08:46:16.000Z",
  "updated": "2009-03-25T15:59:16.000Z",
  "title": "Optical absorption to probe the quantum Hall ferromagnet at filling factor $ν=1$",
  "authors": [
    "P. Plochocka",
    "J. M. Schneider",
    "D. K. Maude",
    "M. Potemski",
    "M. Rappaport",
    "V. Umansky",
    "I. Bar-Joseph",
    "J. G. Groshaus",
    "Y. Gallais",
    "A. Pinczuk"
  ],
  "comment": "4 pages, 2 figures",
  "journal": "Phys. Rev. Lett. 102, 126806 (2009)",
  "doi": "10.1103/PhysRevLett.102.126806",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.other"
  ],
  "abstract": "Optical absorption measurements are used to probe the spin polarization in the integer and fractional quantum Hall effect regimes. The system is fully spin polarized only at filling factor $\\nu=1$ and at very low temperatures($\\sim40$ mK). A small change in filling factor ($\\delta\\nu\\approx\\pm0.01$) leads to a significant depolarization. This suggests that the itinerant quantum Hall ferromagnet at $\\nu=1$ is surprisingly fragile against increasing temperature, or against small changes in filling factor.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2009-03-25T15:59:16.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.Lp",
      "78.67.-n"
    ],
    "keywords": [
      "filling factor",
      "optical absorption",
      "fractional quantum hall effect regimes",
      "small change",
      "itinerant quantum hall ferromagnet"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2009,
      "month": "Mar",
      "volume": 102,
      "number": 12,
      "pages": 126806
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvL.102l6806P"
    }
  }
}