{
  "id": "1806.10911",
  "version": "v1",
  "published": "2018-06-28T12:20:28.000Z",
  "updated": "2018-06-28T12:20:28.000Z",
  "title": "Spin relaxation in multilayers with synthetic ferrimagnets",
  "authors": [
    "Dmytro M. Polishchuk",
    "Taras I. Polek",
    "Akashdeep Kamra",
    "Anatolii F. Kravets",
    "Alexandr I. Tovstolytkin",
    "Arne Brataas",
    "Vladislav Korenivski"
  ],
  "comment": "8 pages, 6 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We demonstrate a strong tunability of the spin-pumping contribution to magnetic damping in a thin-film ferromagnetic free layer interfaced with a synthetic ferrimagnet (SFM), acting as a spin-sink, via a thin Cu-spacer. The effect strongly depends on the magnetic state of the SFM, a trilayer structure composed of two Fe layers coupled via indirect exchange mediated by a Cr spacer. With increasing Cr thickness, the SFM state undergoes a transition from antiparallel via non-collinear to parallel configuration. The corresponding non-monotonous dependence of spin relaxation in the free layer is understood in terms of a modulation of the longitudinal spin transport as well as relaxation of the transverse angular momentum in the SFM. The obtained results should be useful for designing high-speed spintronic devices where tunability of spin relaxation is advantageous.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-06-28T12:20:28.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "spin relaxation",
      "synthetic ferrimagnet",
      "thin-film ferromagnetic free layer",
      "multilayers",
      "transverse angular momentum"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}