[16p-3A-1~11] 10.4 Semiconductors, organic, optical, and quantum spintronics

▼ [16p-3A-3] Asymmetric propagation of spin wave generated by light pulses

〇(D)Isao Yoshimine¹, Yoshito Tanaka¹, Takuya Satoh², Tsutomu Shimura¹ (1.Univ. of Tokyo, 2.Kyushu Univ.)

Keywords:spin wave,optical imaging,light pulses

Spin wave is propagating disturbance in magnetically ordered materials without Joule heating because net electron charges do not flow. It is expected that spin wave can be applied to information processing devices with low energy consumption. Here we demonstrate asymmetrically propagation of the spin wave excited by two parallel line-shaped optical spots. We also show that direction of the propagation can be controlled by the helicity of pump pulses. This result can be applied to spatial shaping of spin wave excited by light pulses.