Abstract
Abstract The theory of parallel-pumping spin wave instability in ferrimagnetic insulators in the presence of a low-power perpendicular RF magnetic field at half the pumping frequency is extended to include the so-called surface magnetostatic modes. The results correctly reproduce previous and more restricted predictions by White and Schlomann, and are in good qualitative agreement with our recent experimental findings in yttrium–iron–garnet (YIG) spheres at room temperature.
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