{
  "id": "0811.2235",
  "version": "v2",
  "published": "2008-11-13T22:32:54.000Z",
  "updated": "2009-06-27T12:03:41.000Z",
  "title": "Intrinsic Coupling between Current and Domain Wall Motion in (Ga,Mn)As",
  "authors": [
    "Kjetil M. D Hals",
    "Anh Kiet Nguyen",
    "Arne Brataas"
  ],
  "comment": "Final version accepted by Physical Review Letters",
  "journal": "Phys. Rev. Lett. 102, 256601 (2009)",
  "doi": "10.1103/PhysRevLett.102.256601",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We consider current-induced domain wall motion and, the reciprocal process, moving domain wall-induced current. The associated Onsager coefficients are expressed in terms of scattering matrices. Uncommonly, in (Ga,Mn)As, the effective Gilbert damping coefficient $\\alpha_w$ and the effective out-of-plane spin transfer torque parameter $\\beta_w$ are dominated by spin-orbit interaction in combination with scattering off the domain wall, and not scattering off extrinsic impurities. Numerical calculations give $\\alpha_w \\sim 0.01$ and $\\beta_w \\sim 1$ in dirty (Ga,Mn)As. The extraordinary large $\\beta_w$ parameter allows experimental detection of current or voltage induced by domain wall motion in (Ga,Mn)As.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2009-06-27T12:03:41.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "72.25.Pn",
      "75.50.Pp",
      "75.60.Ch"
    ],
    "keywords": [
      "domain wall motion",
      "intrinsic coupling",
      "out-of-plane spin transfer torque parameter",
      "effective out-of-plane spin transfer torque"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2009,
      "month": "Jun",
      "volume": 102,
      "number": 25,
      "pages": 256601
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvL.102y6601H"
    }
  }
}