{
  "id": "1805.03875",
  "version": "v1",
  "published": "2018-05-10T08:28:50.000Z",
  "updated": "2018-05-10T08:28:50.000Z",
  "title": "Determination of chirality and density control of Néel-type skyrmions with in-plane magnetic field",
  "authors": [
    "Senfu Zhang",
    "Junwei Zhang",
    "Yan Wen",
    "Eugene M. Chudnovsky",
    "Xixiang Zhang"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Magnetic skyrmions are topologically protected nanoscale spin textures exhibiting fascinating physical behaviors. Recent observations of room temperature N\\'eel-type skyrmions in magnetic multilayer films are an important step towards their use in ultra-low power devices. We have investigated the magnetization reversal in a [Pt/Co/Ta]11 multilayer sample under a tilted magnetic field using the in-situ Lorentz tunneling electron microscopy. On decreasing the magnetic field individual skyrmions appear that subsequently evolve into snake-like structures growing in the direction opposite to the in-plane magnetic field. We show that this unusual relation between the velocity vector and the magnetic field is dominated by the chirality of the N\\'eel-type skyrmions. It allows one to extract the sign of the Dzyaloshinskii-Moriya constant. We also demonstrate that high concentration of skyrmions can be achieved on increasing the in-plane component of the field. Our micromagnetic simulations agree with our experimental results.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-05-10T08:28:50.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "in-plane magnetic field",
      "field individual skyrmions appear",
      "néel-type skyrmions",
      "density control",
      "lorentz tunneling electron microscopy"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}