[6a-C18-1~12] 10.2 スピン基盤技術・萌芽的デバイス技術

▲ [6a-C18-12] Real space- and time-resolved imaging of the photo-excited spin wave via Cotton-Mouton effect

〇Tomosato Hioki¹、Yusuke Hashimoto²、Eiji Saitoh^1,2,3,4 (1.IMR, Tohoku Univ.、2.AIMR, Tohoku Univ.、3.CSRN, Tohoku Univ.、4.ASRC, JAEA)

キーワード：Spin wave, Imaging, Spintronics

Spin wave is collective precession motion of local magnetic moments propagating as a wave. Since phases and the propagation of spin waves on a tangentially magnetized film is expected to be modulated by non-zero Berry curvature, it is expected as a system to investigate the geometrical phase effect on spin waves.In order to realize the observation of the effects, we built a time-resolved magneto-optical imaging method by using Cotton-Mouton effect which is sensitive to the in-plane component of spin precession.We are going to report the measurement result in a garnet film in the presentation.