[14p-P10-1~98] 10 スピントロニクス・マグネティクス（ポスター）

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

〇(DC)Ham WooSeung¹、Kim Sanghoon¹、Kim Kab-Jin²、Okuno Takaya¹、Yoshikawa Hiroki³、Tsukamoto Arata³、Moriyama Takahiro¹、Ono Teruo¹ (1.Inst. for Chem. Res. Kyoto Univ.、2.Dep of Phys. KAIST、3.College of Science and Technology, Nihon Univ.)

キーワード：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.