Abstract
Materials with low damping, such as Yttrium Iron Garnet (YIG), are of interest in connection with spintronic devices. A promising structure for information storage is the Skyrmion, a domain wall quasi-particle. It has been shown that the stabilization of a Skyrmion can be energetically favorable with the addition of spin–orbit coupling (SOC) through the Dzyaloshinskii–Moriya Interaction (DMI). This interaction should be largest in metals, but still present in insulators. To produce spintronic devices using YIG, we must evaluate the DMI interaction inherent in the substrate used to grow the YIG, which is generally Gadolinium Gallium Garnet (GGG). In this paper, we measure nonreciprocal spin-wave propagation in a thick YIG film to place a limit on the DMI parameter in a YIG/GGG bilayer.
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Acknowledgements
This research was carried out under support from the U.S. Department of Energy under Grant DE-SC00144 at Northwestern, and Education and Research Promotion Program of KOREATECH in 2021 at Korea University of Technology and Education.
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Trossman, J., Lim, J., Ketterson, J.B. et al. Nonreciprocal spin-wave propagation in YIG/GGG: a limit on the DMI parameter. J. Korean Phys. Soc. 83, 310–314 (2023). https://doi.org/10.1007/s40042-023-00822-w
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DOI: https://doi.org/10.1007/s40042-023-00822-w