[23a-A201-1~11] 10.2 Fundamental and exploratory device technologies for spin

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[23a-A201-3] Control of surface acoustic wave (SAW) transmission using phonon-magnon coupling

〇Yasuhiro Todaka¹, Isamu Yasuda¹, Hiroki Matsumoto², Masashi Kawaguchi¹, Masamitsu Hayashi¹ (1.The Univ. of Tokyo, 2.Kyoto Univ.)

Keywords:

ferromagnetic resonance,phonon-magnon coupling,surface acoustic wave

When lattice vibrations (phonons) propagate in a ferromagnetic material placed on a piezoelectric substrate, the interaciton with the collective motion of localized electron spins (magnons) causes a loss of phonon energy. In this study, we observed the phonon-magnon coupling using an unconventional, frequency-independent phonon detection method. Additionally, simultaneous measurements of phonons transmitted through the ferromagnetic material and those reflected from it revealed distinct absorption peaks.