[20a-131-1~11] 【CS.9】 Code-sharing Session of 10.1, 10.2, 10.3 & 10.4

▼ [20a-131-4] Dzyaloshinskii-Moriya interaction and spin orbit torque in Pt/Co/Ir multilayers

〇Yuto Ishikuro¹, Masashi Kawaguchi¹, Yong-Chang Lau^1,2, Masamitsu Hayashi^1,2 (1.Univ. of Tokyo, 2.NIMS)

Keywords:Dzyaloshinskii-Moriya interaction, Spin orbit torque, Domain wall

We have studied the DMI and spin orbit torque in multilayers composed of Pt/Co/Ir stacking. The in-plane field dependence of the current-induced anomalous Hall loop shift is measured to estimate the strength of DMI and spin torque efficiencies. By increasing Ir layer thickness, the structure inversion symmetry is broken and an increase of DMI is observed. In addition, an abrupt increase of spin torque efficiencies is observed when the coupling of the Co layers changes from ferromagnetic to antiferromagnetic.