{
  "id": "1108.3145",
  "version": "v1",
  "published": "2011-08-16T02:57:51.000Z",
  "updated": "2011-08-16T02:57:51.000Z",
  "title": "Electrical spin injection and accumulation in CoFe/MgO/Ge contacts at room temperature",
  "authors": [
    "Kun-Rok Jeon",
    "Byoung-Chul Min",
    "Young-Hun Jo",
    "Hun-Sung Lee",
    "Il-Jae Shin",
    "Chang-Yup Park",
    "Seung-Young Park",
    "Sung-Chul Shin"
  ],
  "comment": "28 pages, 5 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We first report the all-electrical spin injection and detection in CoFe/MgO/moderately doped n-Ge contact at room temperature (RT), employing threeterminal Hanle measurements. A sizable spin signal of ~170 k{\\Omega} {\\mu}m^2 has been observed at RT, and the analysis using a single-step tunneling model gives a spin lifetime of ~120 ps and a spin diffusion length of ~683 nm in Ge. The observed spin signal shows asymmetric bias and temperature dependences which are strongly related to the asymmetry of the tunneling process.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-08-16T02:57:51.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "72.25.Dc",
      "72.25.Mk",
      "75.47.-m",
      "85.75.-d"
    ],
    "keywords": [
      "room temperature",
      "cofe/mgo/ge contacts",
      "accumulation",
      "spin signal",
      "spin diffusion length"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.84.165315",
      "journal": "Physical Review B",
      "year": 2011,
      "month": "Oct",
      "volume": 84,
      "number": 16,
      "pages": 165315
    },
    "note": {
      "typesetting": "TeX",
      "pages": 28,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvB..84p5315J"
    }
  }
}