[13a-D311-1~6] Quantum-beam study of optical functions in transition-metal-compound thin films

[13a-D311-5] Fluence Dependence of Photo-induced 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 Yamamoto¹, El Moussaoui Souliman², Yuya Kubota^3,4, Shigeki Owada^3,4, Tadashi Togashi^3,4, Makina Yabashi^4,3, Kodai Miura⁵, Hirotaka Abe⁵, Keisuke Okai⁵, Iwao Matsuda², Toshihiko Yokoyama¹, Takeshi Seki⁶, Koki Takanashi⁶, Hiroki Wadati⁵ (1.IMS, 2.ISSP, Univ. Tokyo, 3.JASRI, 4.RIKEN, 5.Dept. Mater. Sci., Univ. Hyogo., 6.IMR, Tohoku Univ.)

Keywords:XFEL

It is important to capture the photo-induced magnetization dynamics directly with pump-probe method in order to understand and control the spin dynamics with light. We have developed time-resolved magneto-optical resonant Kerr effect measurement system at x-ray free electron laser SACLA BL1 and we reported the results of ferromagnetic Co/Pt thin films. Additionaly, we examined pump laser fluence dependence and we will report this results.