{
  "id": "1405.7634",
  "version": "v1",
  "published": "2014-05-29T17:58:10.000Z",
  "updated": "2014-05-29T17:58:10.000Z",
  "title": "Graphene with adatoms: tuning the magnetic moment with an applied voltage",
  "authors": [
    "N. A. Pike",
    "D. Stroud"
  ],
  "comment": "4 Pages, 1 Figure",
  "journal": "Pike, N. A. and Stroud, D., Applied Physics Letters, 105, 052404 (2014)",
  "doi": "10.1063/1.4892573",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We show that, in graphene with a small concentration of adatoms, the total magnetic moment $\\mu_T$ can be switched on and off by varying the Fermi energy $E_F$, either by applying a gate voltage or by suitable chemical doping. Our calculation is carried out using a simple tight-binding model described previously, combined with a mean-field treatment of the electron-electron interaction on the adatom. The values of $E_F$ at which the moment is turned on or off are controlled by the strength of the hopping between the graphene sheet and the adatom, the on-site energy of the adatom, and the strength of the electron-electron correlation energy U. Our result is in qualitatively consistent with recent experiments by Nair {\\it et al.} [Nat.\\ Commun.\\ {\\bf 4}, 2010 (2013)].",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-05-29T17:58:10.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "applied voltage",
      "total magnetic moment",
      "electron-electron correlation energy",
      "fermi energy",
      "small concentration"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "AIP",
      "journal": "Applied Physics Letters",
      "year": 2014,
      "month": "Aug",
      "volume": 105,
      "number": 5,
      "pages": "052404"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014ApPhL.105e2404P"
    }
  }
}