{
  "id": "1511.05034",
  "version": "v1",
  "published": "2015-11-16T17:03:46.000Z",
  "updated": "2015-11-16T17:03:46.000Z",
  "title": "Magnetic Phases of Graphene Nanoribbons under Potential Fluctuations",
  "authors": [
    "H. U. Özdemir",
    "A. Altıntaş",
    "A. D. Güçlü"
  ],
  "comment": "4 pages, 6 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We investigate the effects of long-range potential fluctuations and electron-electron interactions on electronic and magnetic properties of graphene nanoribbons with zigzag edges using an extended mean-field Hubbard model. We show that electron-electron interactions make the edge states robust against potential fluctuations. When the disorder is strong enough, the presence of electron-hole puddles induces a magnetic phase transition from antiferromagnetically coupled edge states to ferromagnetic coupling, in agreement with recent experimental results.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-11-16T17:03:46.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "graphene nanoribbons",
      "electron-electron interactions",
      "electron-hole puddles induces",
      "magnetic phase transition",
      "edge states robust"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}