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Condensed Matter > Mesoscale and Nanoscale Physics

arXiv:1311.6305 (cond-mat)
[Submitted on 25 Nov 2013]

Title:Spin-wave excitation and propagation in microstructured waveguides of yttrium iron garnet (YIG)/Pt bilayers

Authors:P. Pirro, T. Brächer, A. Chumak, B. Lägel, C. Dubs, O. Surzhenko, P. Görnet, B. Leven, B. Hillebrands
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Abstract:We present an experimental study of spin-wave excitation and propagation in microstructured waveguides patterned from a 100 nm thick yttrium iron garnet (YIG)/platinum (Pt) bilayer. The life time of the spin waves is found to be more than an order of magnitude higher than in comparably sized metallic structures despite the fact that the Pt capping enhances the Gilbert damping. Utilizing microfocus Brillouin light scattering spectroscopy, we reveal the spin-wave mode structure for different excitation frequencies. An exponential spin-wave amplitude decay length of 31 {\mu}m is observed which is a significant step towards low damping, insulator based micro-magnonics.
Subjects: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Cite as: arXiv:1311.6305 [cond-mat.mes-hall]
  (or arXiv:1311.6305v1 [cond-mat.mes-hall] for this version)
  https://doi.org/10.48550/arXiv.1311.6305
Journal reference: Appl Phys Lett 104, 2402 (2014)
Related DOI: https://doi.org/10.1063/1.4861343

Submission history

From: Philipp Pirro [view email]
[v1] Mon, 25 Nov 2013 13:56:17 UTC (1,230 KB)
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