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Spin-wave wavelength down-conversion at thickness steps

Stigloher, Johannes ; Taniguchi, Takuya ; Madami, Marco ; Decker, Martin ; Körner, Helmut S. ; Moriyama, Takahiro ; Gubbiotti, Gianluca ; Ono, Teruo ; Back, Christian H.


We report a systematic experimental study on the refraction and reflection of magnetostatic spin-waves at a thickness step between two Permalloy films of different thickness. The transmitted spin-waves for the transition from a thick film to a thin film have a higher wave vector compared to the incoming waves. Consequently, such systems may find use as passive wavelength transformers in magnonic ...


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