{
  "id": "0906.2423",
  "version": "v1",
  "published": "2009-06-12T20:31:11.000Z",
  "updated": "2009-06-12T20:31:11.000Z",
  "title": "Magnetic dynamics with spin transfer torques near the Curie temperature",
  "authors": [
    "Paul M. Haney",
    "M. D. Stiles"
  ],
  "comment": "8 pages, 6 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We use atomistic stochastic Landau-Lifshitz-Slonczewski simulations to study the interaction between large thermal fluctuations and spin transfer torques in the magnetic layers of spin valves. At temperatures near the Curie temperature $T_{\\rm C}$, spin currents measurably change the size of the magnetization (i.e. there is a {\\it longitudinal} spin transfer effect). The change in magnetization of the free magnetic layer in a spin valve modifies the temperature dependence of the applied field-applied current phase diagram for temperatures near $T_{\\rm C}$. These atomistic simulations can be accurately described by a Landau-Lifshitz-Bloch + Slonczewski equation, which is a thermally averaged mean field theory. Both the simulation and the mean field theory show that a longitudinal spin transfer effect can be a substantial fraction of the magnetization close to $T_{\\rm C}$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-06-12T20:31:11.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "75.47.-m",
      "75.40.-s",
      "75.75.+a"
    ],
    "keywords": [
      "spin transfer torques",
      "curie temperature",
      "magnetic dynamics",
      "field-applied current phase diagram",
      "averaged mean field theory"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.80.094418",
      "journal": "Physical Review B",
      "year": 2009,
      "month": "Sep",
      "volume": 80,
      "number": 9,
      "pages": "094418"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvB..80i4418H"
    }
  }
}