{
  "id": "0904.2396",
  "version": "v2",
  "published": "2009-04-15T20:44:35.000Z",
  "updated": "2009-06-25T22:27:56.000Z",
  "title": "Carrier Density and Magnetism in Graphene Zigzag Nanoribbons",
  "authors": [
    "J. Jung",
    "A. H. MacDonald"
  ],
  "comment": "5 pages, 5 figures",
  "journal": "Phys. Rev. B 79, 235433 (2009)",
  "doi": "10.1103/PhysRevB.79.235433",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The influence of carrier density on magnetism in a zigzag graphene nanoribbon is studied in a $\\pi$-orbital Hubbard-model mean-field approximation. Departures from half-filling alter the magnetism, leading to states with charge density variation across the ribbon and parallel spin-alignment on opposite edges. Finite carrier densities cause the spin-density near the edges to decrease steadily, leading eventually to the absence of magnetism. At low doping densities the system shows a tendency to multiferroic order in which edge charges and spins are simultaneously polarized.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2009-06-25T22:27:56.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "75.75.+a",
      "73.20.-r",
      "73.22.-f",
      "77.80.-e"
    ],
    "keywords": [
      "carrier density",
      "graphene zigzag nanoribbons",
      "orbital hubbard-model mean-field approximation",
      "charge density variation",
      "finite carrier densities"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2009,
      "month": "Jun",
      "volume": 79,
      "number": 23,
      "pages": 235433
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvB..79w5433J"
    }
  }
}