Abstract Using parametric excitation, we have studied the minimum frequency associated with the backward volume (BV) spin wave branch in a thin film of the ferrimagnetic material yttrium iron garnet (YIG) for the magnetic field lying in plane and parallel to the wave vector as well as for out-of-plane field angles. We find that there is a drastic change in the efficiency of parametric excitation between two different pumping frequency regimes.

中文翻译：

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跟踪钇铁石榴石薄膜中反向体积模式的 Suhl 不稳定性与角度和频率的关系

摘要 使用参量激励，我们研究了与位于亚铁磁性材料钇铁石榴石 (YIG) 薄膜中的反向体积 (BV) 自旋波分支相关的最小频率，用于平面并平行于波矢量的磁场为以及平面外场角。我们发现两种不同的泵浦频率体系之间的参数激励效率发生了巨大变化。