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Spin waves (magnons) can enable wave-based neuromorphic computing by whichone aims at overcoming limitations inherent to conventional electronics and thevon Neumann architecture. In this study, we explore the storage of magnonsignals and the magnetization switching of periodic and aperiodic arrays ofNi81Fe19 (Py) nanostripes with widths (w) between 50 nm and 200 nm. Spin wavesexcited with low microwave power in yttrium iron garnet induce the reversal ofthe nanostripes of different w in a small opposing field. Exploitingmicrowave-to-magnon transducers for magnon modes with ultrashort wavelengths,we demonstrate the reversal of 50-nm-wide Py nanostripes by magnons withwavelength ~ 100 nm after they have propagated over 25 micrometer in YIG. Thefindings are important for designing a magnon-based in-memory computing device.

Magnetization Reversal of 50-nm-wide Ni81Fe19 Nanostripes by Ultrashort Magnons in Yttrium Iron Garnet for Memory-Enhanced Magnonic Circuits