講演情報
[8a-E208-3]Nonlinear Interaction between Magnons and Surface Acoustic Wave Phonons
〇Yasuhiro Todaka1, Yuhang Chen1, Masashi Kawaguchi1, Masamitsu Hayashi1 (1.The Univ. of Tokyo)
キーワード：
phonon-magnon coupling、surface acoustic wave、parametric excitation
When surface acoustic wave (SAW) phonons propagate in a magnetic thin film, their interaction with magnons can show nonlinear behavior. In this study, we experimentally investigated this nonlinear phonon-magnon coupling using a device with interdigital transducers (IDTs). By varying the input microwave power and magnetic field, we observed clear nonlinear responses in the transmitted signal, such as a threshold-like power dependence. Additionally, numerical simulations well reproduced these experimental trends, confirming nonlinear magnetoelastic coupling as the underlying mechanism.