{
  "id": "1902.05523",
  "version": "v1",
  "published": "2019-02-14T18:00:09.000Z",
  "updated": "2019-02-14T18:00:09.000Z",
  "title": "Measuring the Dzyaloshinskii-Moriya interaction of the epitaxial Co/Ir(111) interface",
  "authors": [
    "Fabian Kloodt-Twesten",
    "Susanne Kuhrau",
    "Hans Peter Oepen",
    "Robert Frömter"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The in-plane orientation of the magnetization in the center of domain walls is measured in Co/Ir(111) as a function of Co thickness via scanning electron microscopy with polarization analysis. Uncapped, thermally evaporated cobalt on an iridium single-crystal surface is imaged in situ in ultra-high vacuum. The pseudomorphic growth with an atomically flat interface of cobalt on iridium ensures comparability to theoretical calculations and provides a study of an interface that is as ideal as possible. Below a cobalt thickness of 8.8 monolayers, the magnetic domain walls are purely N\\'eel oriented and show a clockwise sense of rotation. For larger thicknesses the plane of rotation changes and the domain walls show a significant Bloch-like contribution, allowing to calculate the strength of the Dzyaloshinskii-Moriya interaction (DMI) from energy minimization. The angle between the plane of rotation and the domain-wall normal allows for calculating the interfacial DMI parameter $D_s = -(1.19 \\pm 0.03)$ pJ/m which corresponds to a DMI energy per bond between two Co atoms at the interface of $d_{tot} = -(1.16 \\pm 0.03)$ meV.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-02-14T18:00:09.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dzyaloshinskii-moriya interaction",
      "epitaxial co/ir",
      "interfacial dmi parameter",
      "iridium single-crystal surface",
      "magnetic domain walls"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}