Enhanced Spin–Orbit Torque Efficiency in Platinum–Gadolinium Oxide Nanocomposite Films
Yuanjing Qu,
Xinkai Xu,
Lei Zhang
et al.
Abstract:Spin−orbit torque (SOT) has emerged as an effective means of manipulating magnetization. However, the current energy efficiency of SOT operation is inefficient due to low damping-like SOT efficiency per unit current bias. In this work, we dope conventional rare earth oxides, GdO y , into highly conductive platinum by magnetron sputtering to form a new group of spin Hall materials. A large damping-like spin−orbit torque (DL-SOT) efficiency of about 0.35 ± 0.013 is obtained in Pt 0.70 (GdO y ) 0.30 measured by t… Show more
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