[19a-Z14-1~11] 6.3 Oxide electronics

△ [19a-Z14-5] Efficiency of charge to spin current conversion at SrIrO₃/CoFeB interface

〇(M1)Sousuke Hori¹, Kohei Ueda¹, Jobu Matsuno¹ (1.Dept. of Phys., Osaka Univ.)

Keywords:spintronics, spin-orbit coupling, transition-metal oxide

Magnetization control using spin current has been attracting attention in terms of low power devices; there is a compelling need for non-magnetic materials with high charge to spin current conversion efficiency. Here, we focus on 5d transition metal oxide SrIrO₃ as a novel spintronic material since its electronic structure is dominated by 5d electrons with strong spin-orbit coupling. By measuring spin Hall magnetoresistance of SrIrO₃/CoFeB bilayer, we deduce the charge to spin current conversion efficiency of SrIrO₃.