{
  "id": "1407.4770",
  "version": "v2",
  "published": "2014-07-17T18:44:42.000Z",
  "updated": "2015-01-16T15:33:46.000Z",
  "title": "Temperature dependence of spin diffusion length and spin Hall angle in Au and Pt",
  "authors": [
    "Miren Isasa",
    "Estitxu Villamor",
    "Luis E. Hueso",
    "Martin Gradhand",
    "Fèlix Casanova"
  ],
  "comment": "13 pages, 5 figures",
  "journal": "Physical Review B 91, 024402 (2015)",
  "doi": "10.1103/PhysRevB.91.024402",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We have studied the spin transport and the spin Hall effect as a function of temperature for platinum (Pt) and gold (Au) in lateral spin valve structures. First, by using the spin absorption technique, we extract the spin diffusion length of Pt and Au. Secondly, using the same devices, we have measured the spin Hall conductivity and analyzed its evolution with temperature to identify the dominant scattering mechanisms behind the spin Hall effect. This analysis confirms that the intrinsic mechanism dominates in Pt whereas extrinsic effects are more relevant in Au. Moreover, we identify and quantify the phonon-induced skew scattering. We show that this contribution to skew scattering becomes relevant in metals such as Au, with a low residual resistivity.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-07-17T18:44:42.000Z",
      "abstract": "We have studied the spin transport and spin Hall effect in gold (Au) and platinum (Pt) using lateral spin valve structures. First, we demonstrate that spin absorption is a successful technique to extract the spin diffusion length of metals by comparing the results to values obtained by conventional lateral spin valves. Secondly, we have measured the spin Hall conductivity and analyzed its evolution with temperature to identify the dominant scattering mechanisms behind the spin Hall effect in Au and Pt. This analysis confirms that the intrinsic mechanism dominates in Pt whereas extrinsic effects are more relevant in Au. Moreover, we identify and quantify in Au the phonon-induced skew scattering. We show that this contribution to skew scattering, which has been neglected up to now, becomes relevant in metals with a low residual resistivity.",
      "comment": "15 pages, 6 figures",
      "journal": null,
      "doi": null
    },
    {
      "version": "v2",
      "updated": "2015-01-16T15:33:46.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "72.25.Ba",
      "72.25.Hg",
      "72.25.Rb"
    ],
    "keywords": [
      "spin diffusion length",
      "spin hall angle",
      "temperature dependence",
      "spin hall effect",
      "lateral spin valve structures"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2015,
      "month": "Jan",
      "volume": 91,
      "number": 2,
      "pages": "024402"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015PhRvB..91b4402I"
    }
  }
}