Abstract

Magnetostatic surface waves (MSSW) propagation and electromotive force (EMF) generation effects in 14.6 µm-thick yttrium iron garnet (YIG) film covered by 8 nm-thick Pt layer was studied. It was found that MSSW dispersion k = k(f) and transmission S₂₁(f) characteristics in the YIG/Pt structure are very similar to that of the free YIG film. For YIG/Pt structure, we show that EMF (U) demonstrates non-monotonous frequency dependence U(f) and is characterized by two peaks U_1,2. The first one (U₁) is located near the short-wavelength (k → ∞) cut-off frequency of the MSSW spectrum and can be attributed to MSSW drag of electrons in YIG/Pt structure. The second one (U₂) is located near the long-wavelength (k → 0) cut-off frequency of the MSSW spectrum and can be attributed to the inverse spin Hall effect due to the spin pumping.

中文翻译：

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通过在集成薄膜Pt / YIG结构中传播静磁表面波来产生EMF

摘要

研究了在厚度为8 nm的Pt层覆盖的14.6 µm厚的钇铁石榴石（YIG）膜中的静磁表面波（MSSW）传播和电动势（EMF）产生效应。发现YIG / Pt结构中的MSSW色散k＝k（f）和透射率S ₂₁（f）特性与自由YIG膜的特性非常相似。对于YIG / Pt结构，我们表明EMF（U）表现出非单调频率依赖性U（f）并具有两个峰U _1,2。第一个（U ₁）位于短波长（k→∞）MSSW频谱的截止频率，可以归因于YIG / Pt结构中MSSW的电子拖曳。第二个（U ₂）位于MSSW光谱的长波长（k →0）截止频率附近，并且可以归因于自旋泵浦的逆自旋霍尔效应。