{
  "id": "1810.04649",
  "version": "v1",
  "published": "2018-10-10T17:15:13.000Z",
  "updated": "2018-10-10T17:15:13.000Z",
  "title": "Tuning of a skyrmion cluster in magnetoelectric Cu$_2$OSeO$_3$ by electric field",
  "authors": [
    "Huang Ping",
    "Marco Cantoni",
    "Arnaud Magrez",
    "Fabrizio Carbone",
    "Henrik M. Rønnow"
  ],
  "categories": [
    "cond-mat.str-el"
  ],
  "abstract": "Chiral magnetic textures with non-trivial topology are known as skyrmions, and due to their unique properties they are promising in novel magnetic storage applications. While the electric manipulation of either isolated skyrmions or a whole skyrmion lattice have been intensively reported, the electric effects on skyrmion clusters remain scarce. In magnetoelectric compound Cu$_2$OSeO$_3$, a skyrmion cluster can be created near the helical-skyrmion phase boundary. Here, we report the in situ electric field writing/erasing of skyrmions in such a skyrmion cluster. Our real space/time image data obtained by Lorentz transmission electron microscopy and the quantitative analysis evidence the linear increase of the number of skyrmions in the cluster upon the application of a creating electric field. The energy needed to create a single skyrmion is estimated to be $\\mathcal{E}=4.7 \\times 10^{-24}$ J.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-10-10T17:15:13.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "magnetoelectric cu",
      "lorentz transmission electron microscopy",
      "skyrmion clusters remain scarce",
      "real space/time image data",
      "novel magnetic storage applications"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}