{
  "id": "1802.01975",
  "version": "v1",
  "published": "2018-02-06T14:47:59.000Z",
  "updated": "2018-02-06T14:47:59.000Z",
  "title": "Domain walls and Dzyaloshinskii-Moriya interaction in epitaxial Co/Ir(111) and Pt/Co/Ir(111)",
  "authors": [
    "Marco Perini",
    "Sebastian Meyer",
    "Bertrand Dupé",
    "Stephan von Malottki",
    "André Kubetzka",
    "Kirsten von Bergmann",
    "Roland Wiesendanger",
    "Stefan Heinze"
  ],
  "comment": "5 pages, 4 figures, 1 table",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We use spin-polarized scanning tunneling microscopy and density functional theory (DFT) to study domain walls (DWs) and the Dzyaloshinskii-Moriya interaction (DMI) in epitaxial films of Co/Ir(111) and Pt/Co/Ir(111). Our measurements reveal DWs with fixed rotational sense on one monolayer of Co on Ir, with a wall width around 2.7 nm. With Pt islands on top, we observe that the DWs occur mostly in the uncovered Co/Ir areas, suggesting that the wall energy density is higher in the Pt/Co/Ir(111). From DFT we find an interfacial DMI that stabilizes N\\'{e}el-type DWs with clockwise rotational sense. The calculated DW widths are in good agreement with the experimental observations. The total DMI nearly doubles from Co/Ir(111) to Pt/Co/Ir(111), however, in the latter case the DMI is almost entirely due to the Pt with only a minor Ir contribution. Therefore a simple additive effect, where both interfaces contribute significantly to the total DMI, is not observed for one atomic Co layer.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-02-06T14:47:59.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dzyaloshinskii-moriya interaction",
      "epitaxial co/ir",
      "rotational sense",
      "total dmi",
      "minor ir contribution"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}