[14p-P10-1~98] 10 Spintronics and Magnetics（Poster）

▲ [14p-P10-32] Temperature dependence of current-induced effective fields in Pt/GdFeCo

〇(DC)WooSeung Ham¹, Sanghoon Kim¹, Kab-Jin Kim², Takaya Okuno¹, Hiroki Yoshikawa³, Arata Tsukamoto³, Takahiro Moriyama¹, Teruo Ono¹ (1.Inst. for Chem. Res. Kyoto Univ., 2.Dep of Phys. KAIST, 3.College of Science and Technology, Nihon Univ.)

Keywords:Ferrimagnet, Spin orbit torque, Magnetic compensation

We investigate the temperature dependence of spin orbit effective field across the magnetic compensation temperature of the heavy metal/ferrimagnet bilayer system. The damping-like effective fields are increased as the temperature goes near T_M. However, the field-like effective fields are negligible and comparable to Oersted field at all temperature ranges. According to conventional spin torque theory, we suggest that this enhancement is mainly due to reduction of total magnetization.