Spin-wave frequency division multiplexing in an yttrium iron garnet microstripe magnetized by inhomogeneous field

Zhizhi Zhang, Michael Vogel, José Holanda, M. Benjamin Jungfleisch, Changjiang Liu, Yi Li, John E. Pearson, Ralu Divan, Wei Zhang, Axel Hoffmann, Yan Nie, Valentyn Novosad

Research output: Contribution to journalArticlepeer-review

Abstract

Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency related division of the spin waves is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogeneous magnetic microstripe with an inhomogeneous field. The symmetry breaking additional field is introduced by a Permalloy stripe simply placed in lateral proximity to an yttrium iron garnet waveguide. Spin waves with different frequencies can propagate independently, simultaneously, and separately in space along the shared waveguide. This work demonstrates one potential way for parallel information transmission and processing in magnonics.

Original languageEnglish (US)
Article number232402
JournalApplied Physics Letters
Volume115
Issue number23
DOIs
StatePublished - Dec 2 2019

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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