Imaging of short-wavelength spin waves in a nanometer-thick YIG/Co bilayer

Abhishek Talapatra, Huajun Qin*, Frank Schulz, Lide Yao, Lukáš Flajšman, Markus Weigand, Sebastian Wintz, Sebastiaan van Dijken*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
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We report the imaging of short-wavelength spin waves in a continuous nanometer-thick YIG film with a Co stripe patterned on top. Dynamic dipolar coupling between the YIG film and the Co stripe lowers the spin-wave wavelength when spin waves enter the YIG/Co bilayer region from the bare YIG film, causing partial reflection at the YIG/Co edge. We use time-resolved scanning transmission x-ray microscopy to image the mode conversion process down to a wavelength of 280 nm and extract the spin-wave dispersion, decay length, and magnetic damping in the YIG/Co bilayer. We also analyze spin-wave reflection from the YIG/Co edge and its dependence on the wavelength of incoming and transmitted spin waves.

Original languageEnglish
Article number202404
Pages (from-to)1-6
Number of pages6
JournalApplied Physics Letters
Issue number20
Publication statusPublished - 15 May 2023
MoE publication typeA1 Journal article-refereed


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