{
  "id": "1211.0124",
  "version": "v1",
  "published": "2012-11-01T08:50:39.000Z",
  "updated": "2012-11-01T08:50:39.000Z",
  "title": "Dynamically-generated pure spin current in single-layer graphene",
  "authors": [
    "Zhenyao Tang1",
    "Eiji Shikoh1",
    "Hiroki Ago2",
    "Kenji Kawahara2",
    "Yuichiro Ando1",
    "Teruya Shinjo1",
    "Masashi Shiraishi1"
  ],
  "comment": "20pages, 4figures, Supplemental Materials",
  "journal": "Phys. Rev. B87, 140401(R) (2013)",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "The conductance mismatch problem limits the spin-injection efficiency significantly, and spin-injection into graphene has been usually requiring high-quality tunnel barriers to circumvent the conductance mismatch. We introduce a novel approach, which enables generation of a pure spin current into single-layer graphene (SLG) free from electrical conductance mismatch by using dynamical spin injection. Experimental demonstration of spin-pumping-induced spin current generation and spin transport in SLG at room temperature was successfully achieved and the spin coherence was estimated to be 1.36 {\\mu}m by using a conventional theoretical model based on Landau-Lifshitz-Gilbert equation. The spin coherence is proportional to the quality of SLG, which indicates that spin relaxation in SLG is governed by the Elliot-Yafet mechanism as was reported.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-11-01T08:50:39.000Z"
    }
  ],
  "resources": [
    {
      "type": "1",
      "source": "1",
      "title": "Mr.",
      "href": "1",
      "status": "public"
    }
  ],
  "analyses": {
    "subjects": [
      "85.75.-d",
      "72.25.Dc",
      "72.25.Mk"
    ],
    "keywords": [
      "dynamically-generated pure spin current",
      "single-layer graphene",
      "requiring high-quality tunnel barriers",
      "conductance mismatch problem limits",
      "spin coherence"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.87.140401",
      "journal": "Physical Review B",
      "year": 2013,
      "month": "Apr",
      "volume": 87,
      "number": 14,
      "pages": 140401
    },
    "note": {
      "typesetting": "TeX",
      "pages": 20,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013PhRvB..87n0401T"
    }
  }
}