{
  "id": "0709.4214",
  "version": "v2",
  "published": "2007-09-26T17:12:35.000Z",
  "updated": "2007-12-07T18:39:11.000Z",
  "title": "Destruction of first-order phase transition in a random-field Ising model",
  "authors": [
    "N. Crokidakis",
    "F. D. Nobre"
  ],
  "comment": "13 pages, 3 figures",
  "journal": "J. Phys.: Condens. Matter 20, 145211 (2008)",
  "doi": "10.1088/0953-8984/20/14/145211",
  "categories": [
    "cond-mat.dis-nn",
    "cond-mat.stat-mech"
  ],
  "abstract": "The phase transitions that occur in an infinite-range-interaction Ising ferromagnet in the presence of a double-Gaussian random magnetic field are analyzed. Such random fields are defined as a superposition of two Gaussian distributions, presenting the same width $\\sigma$. Is is argued that this distribution is more appropriate for a theoretical description of real systems than its simpler particular cases, i.e., the bimodal ($\\sigma=0$) and the single Gaussian distributions. It is shown that a low-temperature first-order phase transition may be destructed for increasing values of $\\sigma$, similarly to what happens in the compound $Fe_{x}Mg_{1-x}Cl_{2}$, whose finite-temperature first-order phase transition is presumably destructed by an increase in the field randomness.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-12-07T18:39:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "random-field ising model",
      "finite-temperature first-order phase transition",
      "low-temperature first-order phase transition",
      "destruction",
      "double-gaussian random magnetic field"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Journal of Physics Condensed Matter",
      "year": 2008,
      "month": "Apr",
      "volume": 20,
      "number": 14,
      "pages": 145211
    },
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008JPCM...20n5211C"
    }
  }
}