{
  "id": "cond-mat/0106406",
  "version": "v1",
  "published": "2001-06-20T16:40:33.000Z",
  "updated": "2001-06-20T16:40:33.000Z",
  "title": "Suppression of carrier induced ferromagnetism by composition and spin fluctuations in diluted magnetic semiconductors",
  "authors": [
    "Yu. G. Semenov",
    "V. A. Stephanovich"
  ],
  "comment": "6 pages, 2 figures",
  "doi": "10.1103/PhysRevB.66.075202",
  "categories": [
    "cond-mat.dis-nn",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We suggest an approach to account for spatial (composition) and thermal fluctuations in \"disordered\" magnetic models (e.g. Heisenberg, Ising) with given spatial dependence of magnetic spin-spin interaction. Our approach is based on introduction of fluctuating molecular field (rather than mean field) acting between the spins. The distribution function of the above field is derived self-consistently. In general case this function is not Gaussian, latter asymptotics occurs only at sufficiently large spins (magnetic ions) concentrations $n_i$. Our approach permits to derive the equation for a critical temperature $T_c$ of ferromagnetic phase transition with respect to the above fluctuations. We apply our theory to the analysis of influence of composition fluctuations on $T_c$ in diluted magnetic semiconductors (DMS) with RKKY indirect spin-spin interaction.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2001-06-20T16:40:33.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "diluted magnetic semiconductors",
      "carrier induced ferromagnetism",
      "spin fluctuations",
      "composition",
      "rkky indirect spin-spin interaction"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}