Study of Surface Character of Micrometer-Scale Dipole-Exchange Spin Waves in an Yttrium Iron Garnet Film

Jinho Lim, Wonbae Bang, Jonathan Trossman, Andreas Kreisel, Matthias Benjamin Jungfleisch, Axel Hoffmann, C. C. Tsai, John B. Ketterson

Research output: Contribution to journalArticle

Abstract

We demonstrate that micrometer-scale spin waves can be excited in a thin film of the ferrimagnetic material yttrium iron garnet (YIG) using patterned, multi-element antennas. The magnitude of the dynamic magnetic field generated by such antennas decays exponentially along the thickness direction, and this leads to an enhanced coupling to modes having a surface-like character as opposed to a more sinusoidal bulk-like character. We have used this property to identify spin waves having a mixed bulk/surface character.

Original languageEnglish (US)
Article number8457497
JournalIEEE Transactions on Magnetics
Volume55
Issue number2
DOIs
StatePublished - Feb 2019
Externally publishedYes

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Keywords

  • Dipole-exchange spin wave
  • hybridization
  • multi-element antenna
  • surface mode

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Lim, J., Bang, W., Trossman, J., Kreisel, A., Jungfleisch, M. B., Hoffmann, A., Tsai, C. C., & Ketterson, J. B. (2019). Study of Surface Character of Micrometer-Scale Dipole-Exchange Spin Waves in an Yttrium Iron Garnet Film. IEEE Transactions on Magnetics, 55(2), [8457497]. https://doi.org/10.1109/TMAG.2018.2864917