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Nonlocal stimulation of three-magnon splitting in a magnetic vortex

Körber, Lukas; Schultheiß, Katrin; Hula, Tobias; Verba, Roman; Faßbender, Jürgen; Kakay, Attila; Schultheiß, Helmut


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  "@id": "https://doi.org/10.14278/rodare.365", 
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      "@id": "https://arxiv.org/abs/2005.12663"
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  "name": "Nonlocal stimulation of three-magnon splitting in a magnetic vortex", 
  "license": "https://creativecommons.org/licenses/by/4.0/legalcode", 
  "description": "<p>We present a combined numerical, theoretical and experimental study on stimulated three-magnon splitting in a magnetic disk in the vortex equilibrium state. Our micromagnetic simulations and Brillouin-light-scattering results confirm that three-magnon splitting can be triggered even below threshold by exciting one of the secondary modes by magnons propagating in a waveguide next to the disk. The experiments show that stimulation is possible over an extended range of excitation powers and a wide range of frequencies around the eigenfrequencies of the secondary modes. Rate-equation calculations predict an instantaneous response to stimulation and the possibility to prematurely trigger three-magnon splitting even above threshold in a sustainable manner. These predictions are confirmed experimentally using time-resolved Brillouin-light-scattering measurements and are in a good qualitative agreement with the theoretical results. We believe that the controllable mechanism of stimulated three-magnon splitting could provide a possibility to utilize magnon-based nonlinear networks as hardware for reservoir or neuromorphic computing.</p>\n\n<p>Here, we briefly describe how the archived data for the publication&nbsp;&quot;Nonlocal stimulation of three-magnon splitting in a magnetic vortex&quot;, submitted&nbsp;to PRL, is structured.</p>\n\n<p>&quot;rate-equations&quot;<br>\n- theoretical data of the temporal evolution of the spin wave modes in Fig. 4</p>\n\n<p>&quot;micromagnetic-simulation&quot;<br>\n- MuMax3 simulation recipes (.go files) and sample-layout masks for the<br>\nsimulations performed for Fig. 2(a,b,c).<br>\n- corresponding power spectra obtained with our &quot;mumax3-pwsp&quot; program<br>\n- mode profiles for stimulated and spontaneous splitting (Fig. 1(c) and Fig. 2(d))<br>\n- dispersion of the spin waves, calculated by micromagetnic simulation, shown in Fig. 1(b)</p>\n\n<p>&quot;experiments&quot;<br>\n- electron beam microscopy image of the sample<br>\n- intensity spectrum of the waveguide, used to calculate the approximate<br>\nfrequency/wave-vector region where the waveguide is effective (inset in Fig. 1(c))<br>\n- non-time-resolved BLS measurements, including spectra, power sweeps, etc. for<br>\nFigs 2,3 in &quot;i3MS&quot; folders, in more detail described by &quot;i3MS_V1_KS_logbook.pdf&quot;<br>\n- time-resolved BLS measurements, further explained in the corresponding subfolders<br>\n&nbsp;</p>", 
  "creator": [
    {
      "@type": "Person", 
      "@id": "https://orcid.org/0000-0001-8332-9669", 
      "name": "K\u00f6rber, Lukas"
    }, 
    {
      "@type": "Person", 
      "@id": "https://orcid.org/0000-0002-3382-5442", 
      "name": "Schulthei\u00df, Katrin"
    }, 
    {
      "@type": "Person", 
      "@id": "https://orcid.org/0000-0002-1811-8862", 
      "name": "Hula, Tobias"
    }, 
    {
      "@type": "Person", 
      "@id": "https://orcid.org/0000-0001-8811-6232", 
      "affiliation": "Institute of Magnetism, Kyiv 03142, Ukraine", 
      "name": "Verba, Roman"
    }, 
    {
      "@type": "Person", 
      "@id": "https://orcid.org/0000-0003-3893-9630", 
      "name": "Fa\u00dfbender, J\u00fcrgen"
    }, 
    {
      "@type": "Person", 
      "@id": "https://orcid.org/0000-0002-3195-219X", 
      "name": "Kakay, Attila"
    }, 
    {
      "@type": "Person", 
      "@id": "https://orcid.org/0000-0002-6727-5098", 
      "name": "Schulthei\u00df, Helmut"
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  "@type": "Dataset", 
  "datePublished": "2020-06-11", 
  "keywords": [
    "spin wave", 
    "nonlinear", 
    "three-magnon splitting", 
    "stimulation", 
    "micromagnetic simulation", 
    "BLS"
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