Abstract
We performed time domain propagating spin-wave (SW) spectroscopy to investigate SW soliton formation. By choosing backward volume SW mode, we successfully observed a multiple solitons formation and propagation. The SW power dependence on the duration of excitation signal showed nonlinear dependence, and SW maintained its wave packet width. By making a contour plot of SW power, the evolution of SW soliton was clearly demonstrated. The generation and annihilation of SW soliton exhibited a complicated behavior, showing the competition between nonlinear effect and dispersion/relaxation effects.
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