講演情報
[14p-K303-6]Investigation of origin of spin wave nonreciprocity
〇Haruka Komiyama1, Kotaro Taga1, Ryusuke Hisatomi1,2,3, Hiroki Matsumoto1, Hideki Narita1,3, Shutaro Karube1,2,3, Yoichi Shiota1,2, Teruo Ono1,2 (1.ICR, Kyoto Univ., 2.CSRN, Kyoto Univ., 3.PREST, JST)
キーワード：
spin wave、nonreciprocity、magneto-optical imaging
Spin wave nonreciprocity, defined as the difference in characteristics depending on the propagation direction, provides functionality to magnonic devices. Spin wave nonreciprocity has primarily been studied using electrical measurements. However, it is difficult to identify the origin of nonreciprocity with this method because the signal contains contributions from both excitation and propagation effects. In addition, previous studies have focused only on specific magnetic field configurations. In this study, we use conventional electrical measurements and magneto-optical imaging measurements to observe the spatial distribution of spin waves while sweeping the magnetic field angle to investigate the origin of spin wave nonreciprocity. As a result, we find that the excitation and propagation effects are the origins of spin wave nonreciprocity in different magnetic field angle regions.
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