{
  "id": "cond-mat/0404145",
  "version": "v1",
  "published": "2004-04-06T18:41:03.000Z",
  "updated": "2004-04-06T18:41:03.000Z",
  "title": "Evidence of spontaneous spin polarization in the two-dimensional electron gas",
  "authors": [
    "A. R. Goñi",
    "P. Giudici",
    "F. A. Reboredo",
    "C. R. Proetto",
    "C. Thomsen",
    "K. Eberl",
    "M. Hauser"
  ],
  "comment": "one tex file and four figures",
  "doi": "10.1103/PhysRevB.70.195331",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Density-functional calculations using an exact exchange potential for a two-dimensional electron gas (2DEG) formed in a GaAs single quantum well predict the existence of a spin-polarized phase, when an excited subband becomes slightly populated. Direct experimental evidence is obtained from low temperature and low excitation-power photoluminescence (PL) spectra which display the sudden appearance of a sharp emission peak below the energy of the optical transition from the first excited electron subband upon its occupation. The behavior of this PL feature in magnetic fields applied in-plane as well as perpendicular to the 2DEG indicate the formation of spin-polarized domains in the excited subband with in-plane magnetization. For it speaks also the strong enhancement of exchange-vertex corrections observed in inelastic light scattering spectra by spin-density excitations of a slightly occupied first-excited subband.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2004-04-06T18:41:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "two-dimensional electron gas",
      "spontaneous spin polarization",
      "excited subband",
      "inelastic light scattering spectra",
      "direct experimental evidence"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}