{
  "id": "1808.01436",
  "version": "v1",
  "published": "2018-08-04T06:45:10.000Z",
  "updated": "2018-08-04T06:45:10.000Z",
  "title": "Chiral skyrmion auto-oscillations in a ferromagnet under spin transfer torque",
  "authors": [
    "Naveen Sisodia",
    "Stavros Komineas",
    "Pranaba Kishor Muduli"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "A skyrmion can be stabilized in a nanodisc geometry in a ferromagnetic material with Dzyaloshinskii-Moriya (DM) interaction. We apply spin torque uniform in space and time and observe numerically that the skyrmion is set in steady rotational motion around a point off the nanodisc center. We give a theoretical description of the emerging auto-oscillation dynamics based on the coupling of the rotational motion to the breathing mode of the skyrmion and to the associated oscillations of the in-plane magnetization. The analysis shows that the achievement of auto-oscillations in this simple set-up is due to the chiral symmetry breaking. Thus, we argue that the system is turned into a spin-torque oscillator due to the chiral DM interaction.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-08-04T06:45:10.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "spin transfer torque",
      "chiral skyrmion auto-oscillations",
      "ferromagnet",
      "chiral dm interaction",
      "apply spin torque uniform"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}