Composition-tunable magnon-polaron anomalies in spin Seebeck effects in epitaxial Bi${}_x$Y${}_{3-x}$Fe${}_5$O${}_{12}$ films

Takashi Kikkawa, Koichi Oyanagi, Tomosato Hioki +5

We have investigated hybridized magnon-phonon excitation (magnon polarons) in spin Seebeck effects (SSEs) in Bi${}_x$Y${}_{3-x}$Fe${}_5$O${}_{12}$ (Bi${}_x$Y${}_{3-x}$IG; $x=0$, $0.5$, and $…