{
  "id": "1005.3112",
  "version": "v1",
  "published": "2010-05-18T06:49:11.000Z",
  "updated": "2010-05-18T06:49:11.000Z",
  "title": "Optical Probing of the Spin Polarization of the nu=5/2 Quantum Hall State",
  "authors": [
    "M. Stern",
    "P. Plochocka",
    "V. Umansky",
    "D. K. Maude",
    "M. Potemski",
    "I. Bar-Joseph"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We apply polarization resolved photoluminescence spectroscopy to measure the spin polarization of a two dimensional electron gas in perpendicular magnetic field. In the vicinity of filling factor nu=5/2, we observe a sharp discontinuity in the energy of the zero Landau level emission line. We find that the splitting between the two circular polarizations exhibits a sharp drop at nu=5/2 and is equal to the bare Zeeman energy, which resembles the behavior at even filling factors. We show that this behavior is consistent with filling factor nu=5/2 being unpolarized.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-05-18T06:49:11.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.21.Fg",
      "72.25.Fe",
      "73.43.Lp"
    ],
    "keywords": [
      "quantum hall state",
      "spin polarization",
      "polarization resolved photoluminescence spectroscopy",
      "optical probing",
      "filling factor"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevLett.105.096801",
      "journal": "Physical Review Letters",
      "year": 2010,
      "month": "Aug",
      "volume": 105,
      "number": 9,
      "pages": "096801"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010PhRvL.105i6801S"
    }
  }
}