{
  "id": "2106.10103",
  "version": "v1",
  "published": "2021-06-18T12:53:45.000Z",
  "updated": "2021-06-18T12:53:45.000Z",
  "title": "Study of Spin-Orbit Interactions and Interlayer Ferromagnetic Coupling in Co/Pt/Co Trilayers in Wide Range of Heavy Metal Thickness",
  "authors": [
    "Piotr Ogrodnik",
    "Krzysztof Grochot",
    "Łukasz Karwacki",
    "Jarosław Kanak",
    "Michał Prokop",
    "Jakub Chęciński",
    "Witold Skowroński",
    "Sławomir Ziętek",
    "Tomasz Stobiecki"
  ],
  "comment": "39 pages, 14 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "The spin-orbit torque, a torque induced by a charge current flowing through the heavy-metal conducting layer with strong spin-orbit interactions, provides an efficient way to control the magnetization direction in heavy-metal/ferromagnet nanostructures, required for applications in the emergent magnetic technologies like random access memories, high-frequency nano oscillators, or bio-inspired neuromorphic computations. We study the interface properties, magnetization dynamics, magnetostatic features and spin-orbit interactions within the multilayer system Ti(2)/Co(1)/Pt(0-4)/Co(1)/MgO(2)/Ti(2) (thicknesses in nanometers) patterned by optical lithography on micrometer-sized bars. In the investigated devices, Pt is used as a source of the spin current and as a non-magnetic spacer with variable thickness, which enables the magnitude of the interlayer ferromagnetic exchange coupling to be effectively tuned. We also find the Pt thickness-dependent changes in magnetic anisotropies, magnetoresistance, effective Hall angle and, eventually, spin-orbit torque fields at interfaces. The experimental findings are supported by the relevant interface structure-related simulations, micromagnetic, macrospin, as well as the spin drift-diffusion models. Finally, the contribution of the spin-orbital Edelstein-Rashba interfacial fields is also briefly discussed in the analysis.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-06-18T12:53:45.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "spin-orbit interactions",
      "heavy metal thickness",
      "interlayer ferromagnetic coupling",
      "co/pt/co trilayers",
      "wide range"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 39,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}