中国科学技术大学自旋电子材料与器件实验室--自旋电子材料与器件实验室-- Li P, Channa S, Li X, et al. Large Spin-Orbit-Torque Efficiency and Room-Temperature Magnetization Switching in Sr Ir O 3/Co-Fe-B Heterostructures[J]. Physical Review Applied, 2023, 19(2): 024076.

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Li P, Channa S, Li X, et al. Large Spin-Orbit-Torque Efficiency and Room-Temperature Magnetization Switching in Sr Ir O 3/Co-Fe-B Heterostructures[J]. Physical Review Applied, 2023, 19(2): 024076.

发布时间：2024-04-23点击次数：

发表刊物：
Physical Review Applied
摘要：
Spin-orbit-torque (SOT) switching is a potentially energy-efficient mechanism by which electrical current can control magnetization. We demonstrate room-temperature SOT switching in nanometer-thick Co Fe B/Sr Ir O 3 bilayers despite the amorphous nature of CoFeB and the interface. This behavior is attributed to the large spin Hall angle in Sr Ir O 3 as well as high spin transmission at the interface that contribute to the SOT efficiency ξ SOT. Our bilayers exhibit large ξ SOT of up to 1.4 and effective spin Hall conductivity of 0.9× 10 5 (ℏ/2e) Ω− 1 m− 1. In our bilayers, we observe unidirectional magnetoresistance and current-induced magnetization switching with a low critical current density of 1.38× 10 10 A/m 2 at room temperature. Our results are promising for heterostructures combining technologically relevant CoFeB with high spin-orbit-coupling oxides.
论文类型：
期刊论文
卷号：
19
期号：
2
页面范围：
024076
是否译文：
否
发表时间：
2023-02-28
发布期刊链接：
https://doi.org/10.1103/PhysRevApplied.19.024076

上一条：Li R, Riddiford L J, Chai Y, et al. A puzzling insensitivity of magnon spin diffusion to the presence of 180-degree domain walls[J]. Nature Communications, 2023, 14(1): 2393. 下一条：Li P, Yu D, Liang J, et al. Topological spin textures in 1 T-phase Janus magnets: Interplay between Dzyaloshinskii-Moriya interaction, magnetic frustration, and isotropic higher-order interactions[J]. Physical Review B, 2023, 107(5): 054408.