Direct detection of multiple backward volume modes in yttrium iron garnet at micron scale wavelengths

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

Research output: Contribution to journalArticlepeer-review

Abstract

Using a set of wave-vector-specific multielement antennas, we have characterized the dispersion of spin waves in an yttrium iron garnet film at submicron lengths and resolved the dispersion relations of multiple backward volume modes, particularly in the region of their minima. The techniques developed now facilitate the characterization of spin waves at length scales limited only by available lithography and at a spectral resolution that generally exceeds that of Brillouin scattering. The data obtained are in excellent agreement with theoretical predictions based on a model Hamiltonian.

Original languageEnglish (US)
Article number014435
JournalPhysical Review B
Volume99
Issue number1
DOIs
StatePublished - Jan 28 2019
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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