{
  "id": "1702.05675",
  "version": "v1",
  "published": "2017-01-09T12:01:57.000Z",
  "updated": "2017-01-09T12:01:57.000Z",
  "title": "Spin-Wave Modes in Transition from a Thin Film to a Full Magnonic Crystal",
  "authors": [
    "Manuel Langer",
    "Rodolfo A. Gallardo",
    "Tobias Schneider",
    "Sven Stienen",
    "Alejandro Roldán-Molina",
    "Ye Yuan",
    "Kilian Lenz",
    "Jürgen Lindner",
    "Pedro Landeros",
    "Jürgen Fassbender"
  ],
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "Spin-wave modes are studied under the gradual transition from a flat thin film to a 'full' (one-dimensional) magnonic crystal. For this purpose, the surface of a patterned 36.8 nm thin permalloy film was sequentially ion milled resulting in multiple hybrid magnonic crystals consisting of a thin film with a one-dimensional magnonic crystal on top. After each etching step, ferromagnetic resonance measurements were performed yielding the spin-wave resonance modes in backward-volume and Damon-Eshbach geometry. Spin-wave spectra of intermediate hybrid magnonic crystals reveal an even larger variety of spin-wave states compared to the 'full' magnonic crystal. The measurements are corroborated with quasi-analytical theory and micromagnetic simulations in order to study the changing spin-wave mode character employing the calculated mode profiles. In backward-volume geometry, a gradual transition from the uniform mode in the film limit to a fundamental mode in the thin part of the magnonic crystal was observed. Equivalently, the first and the second film modes are found to transition to the center and the edge mode of the thick part of the magnonic crystal, respectively. Simple transition rules from the $n$th film mode to the $m$th mode in the 'full' magnonic crystal are formulated unraveling the complex 'mode jungle' particularly in the backward-volume geometry. An analogous analysis was performed in the Damon-Eshbach geometry.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-01-09T12:01:57.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "thin film",
      "full magnonic crystal",
      "transition",
      "hybrid magnonic crystals consisting",
      "spin-wave mode character employing"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}