[10a-S423-1~11] CS.7 Code-sharing Session of 7.4 & 9.5

△ [10a-S423-5] Magnetization Dynamics of Co/Pt Thin Films Probed by Time-resolved Resonant Magneto-Optical Kerr Effect Measurements Using X-ray Free Electron Laser

〇Kohei Yamamoto^1,2, Souliman El Moussaoui¹, Yasuyuki Hirata^1,2, Susumu Yamamoto^1,2, Yuya Kubota^3,4, Shigeki Owada^3,4, Makina Yabashi^3,4, Iwao Matsuda^1,2, Takeshi Seki⁵, Koki Takanashi⁵, Hiroki Wadati^1,2 (1.ISSP, Univ. of Tokyo, 2.Dept. of Phys., Univ. of Tokyo, 3.JASRI, 4.RIKEN, 5.IMR, Tohoku Univ.)

Keywords:photo-induced magnetization dynamics

It is important to capture the photo-induced magnetizatoin dynamics directly with pump-probe time-resolved measurements in order to understand photo-induced magnetization dynamics and manipulate spin with light. We performed time-resolved magneto-optical Kerr effect measurement at absorption edges using x-ray free electron laser SACLA and obtained the photo-induced magnetization dynamics of ferromagnetic Co/Pt multilayer thin films. We found a clear element dependence of demagnetization time scales.