{
  "id": "0910.4043",
  "version": "v1",
  "published": "2009-10-21T10:43:36.000Z",
  "updated": "2009-10-21T10:43:36.000Z",
  "title": "Spin Valve Effect in ZigZag Graphene Nanoribbons by Defect Engineering",
  "authors": [
    "Sankaran Lakshmi",
    "Stephan Roche",
    "Gianaurelio Cuniberti"
  ],
  "comment": "4 pages, 4 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We report on the possibility for a spin valve effect driven by edge defect engineering of zigzag graphene nanoribbons. Based on a mean-field spin unrestricted Hubbard model, electronic band structures and conductance profiles are derived, using a self-consistent scheme to include gate-induced charge density. The use of an external gate is found to trigger a semiconductor-metal transition in clean zigzag graphene nanoribbons, whereas it yields a closure of the spin-split bandgap in the presence of Klein edge defects. These features could be exploited to make novel charge and spin based switches and field effect devices.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-10-21T10:43:36.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.22.-f",
      "72.25.-b",
      "75.75.+a"
    ],
    "keywords": [
      "defect engineering",
      "spin valve effect driven",
      "mean-field spin unrestricted hubbard model",
      "clean zigzag graphene nanoribbons",
      "edge defect"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.80.193404",
      "journal": "Physical Review B",
      "year": 2009,
      "month": "Nov",
      "volume": 80,
      "number": 19,
      "pages": 193404
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvB..80s3404L"
    }
  }
}