{
  "id": "1509.08121",
  "version": "v1",
  "published": "2015-09-27T18:55:26.000Z",
  "updated": "2015-09-27T18:55:26.000Z",
  "title": "Monte Carlo Simulations of the site-diluted 3d XY model with superexchange interaction: application to Fe[Se$_2$CN(C$_2$H$_5$)$_2$]$_2$Cl -- Zn[S$_2$CN(C$_2$H$_5$)$_2$]$_2$ diluted magnets",
  "authors": [
    "J. B. Santos-Filho",
    "J. A. Plascak"
  ],
  "categories": [
    "cond-mat.dis-nn"
  ],
  "abstract": "A simple site-diluted classical XY model is proposed to study the magnetic properties of the ferromagnetic polycrystalline Fe[Se$_2$CN(C$_2$H$_5$)$_2$]$_2$Cl diluted with diamagnetic Zn[S$_2$CN(C$_2$H$_5$)$_2$]$_2$. An extra superexchange interaction is assumed between next-nearest-neighbors on a simple cubic lattice, which are induced by a diluted ion. The critical properties are obtained by Monte Carlo simulations using a hybrid algorithm, single histograms procedures and finite-size scaling techniques. Quite good fits to the experimental results of the ordering temperature are obtained, namely its much less rapidly decreasing with dilution than predicted by the standard diluted 3$d$ XY model, and the change in curvature around $86\\%$ of the magnetic Fe[Se$_2$CN(C$_2$H$_5$)$_2$]$_2$Cl compound.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-09-27T18:55:26.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "monte carlo simulations",
      "site-diluted 3d xy model",
      "superexchange interaction",
      "diluted magnets",
      "site-diluted classical xy model"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}