{
  "id": "0906.5604",
  "version": "v1",
  "published": "2009-06-30T18:34:02.000Z",
  "updated": "2009-06-30T18:34:02.000Z",
  "title": "Magnetism of Substitutional Co Impurities in Graphene: Realization of Single $π$-Vacancies",
  "authors": [
    "E. J. G. Santos",
    "D. Sanchez-Portal",
    "A. Ayuela"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We report {\\it ab initio} calculations of the structural, electronic and magnetic properties of a graphene monolayer substitutionally doped with Co (Co$_{sub}$) atoms. We focus in Co because among traditional ferromagnetic elements (Fe, Co and Ni), only Co$_{sub}$ atoms induce spin-polarization in graphene. Our results show the complex magnetism of Co substitutional impurites in graphene, which is mapped into simple models such as the $\\pi$-vacancy and Heisenberg model. The links established in our work can be used to bring into contact the engineering of nanostructures with the results of $\\pi$-models in defective graphene. In principle, the structures considered here can be fabricated using electron irradiation or Ar$^+$ ion bombardment to create defects and depositing Co at the same time.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-06-30T18:34:02.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.90.+f",
      "75.70.-i",
      "61.48.De"
    ],
    "keywords": [
      "realization",
      "impurities",
      "atoms induce spin-polarization",
      "traditional ferromagnetic elements",
      "substitutional impurites"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.81.125433",
      "journal": "Physical Review B",
      "year": 2010,
      "month": "Mar",
      "volume": 81,
      "number": 12,
      "pages": 125433
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010PhRvB..81l5433S"
    }
  }
}