{
  "id": "0901.3287",
  "version": "v1",
  "published": "2009-01-21T14:59:54.000Z",
  "updated": "2009-01-21T14:59:54.000Z",
  "title": "Ab initio calculation of intrinsic spin Hall conductivity of Pd and Au",
  "authors": [
    "G. Y. Guo"
  ],
  "comment": "Accepted for publication in J. Appl. Phys",
  "journal": "J. Appl. Phys. 105, 07C701 (2009)",
  "doi": "10.1063/1.3054362",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "An {\\it ab initio} relativistic band structure calculation of spin Hall conductivity (SHC) ($\\sigma_{xy}^z$) in Pd and Au metals has been performed. It is found that at low temperatures, intrinsic SHCs for Pd and Au are, respectively, $\\sim 1400 (\\hbar/e)(\\Omega {\\rm cm})^{-1}$ and $\\sim 400 (\\hbar/e)(\\Omega {\\rm cm})^{-1}$. The large SHC in Pd comes from the resonant contribution from the spin-orbit splitting of the doubly degenerated 4$d$ bands near the Fermi level at symmetry $\\Gamma$ and X points, and the smaller SHC in Au is due to the broad free electron like 6$s6p$-bands. However, as the temperature increases, the SHC in Pd decreases monotonically and reduces to $\\sim 330 (\\hbar/e)(\\Omega {\\rm cm})^{-1}$ at 300 K, while the SHC in Au increases steadily and reaches $\\sim 750 (\\hbar/e)(\\Omega {\\rm cm})^{-1}$ at room temperature. This indicates that the gigantic spin Hall effect [$\\sigma_{xy}^z \\approx 10^5 (\\hbar/e)(\\Omega {\\rm cm})^{-1}$] observed recently in the Au/FePt system [T. Seki, {\\it et al.}, Nature Materials {\\bf 7}, 125 (2008)] is due to the extrinsic mechanisms such as the skew scattering by the impurities in Au.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-01-21T14:59:54.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "71.15.Rf",
      "72.15.Gd",
      "71.70.Ej",
      "71.20.Be",
      "72.10.Fk"
    ],
    "keywords": [
      "intrinsic spin hall conductivity",
      "ab initio calculation",
      "relativistic band structure calculation",
      "gigantic spin hall effect"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "AIP",
      "journal": "Journal of Applied Physics",
      "year": 2009,
      "month": "Apr",
      "volume": 105,
      "number": 7
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009JAP...105gC701G"
    }
  }
}