Spin-orbit torque effect in silicon-based sputtered Mn_(3)Sn film  

作　　者：Sha Lu Dequan Meng Adnan Khan Ziao Wang Shiwei Chen Shiheng Liang 卢莎;孟德全;Adnan Khan1;王子傲;陈是位;梁世恒(School of Physics,Hubei University,Wuhan 430062,China;Key Laboratory for Intelligent Sensing System and Security of Ministry of Education,Wuhan 430062,China)

机构地区：[1]School of Physics,Hubei University,Wuhan 430062,China [2]Key Laboratory for Intelligent Sensing System and Security of Ministry of Education,Wuhan 430062,China

出　　处：《Chinese Physics B》2024年第10期394-399,共6页中国物理B（英文版）

基　　金：supported by the National Key Research and Development Program of China(Grant No.2022YFE0103300);the National Natural Science Foundation of China(Grant No.12274119);the Natural Science Foundation of Hubei Province(Grant No.2022CFA088);the Open Research Fund of Songshan Lake Materials Laboratory(Grant No.2022SLABFN04).

摘　　要：Noncollinear antiferromagnet Mn_(3)Sn has shown remarkable efficiency in charge-spin conversion,a novel magnetic spin Hall effect,and a stable topological antiferromagnetic state,which has resulted in great interest from researchers in the field of spin-orbit torque.Current research has primarily focused on the spin-orbit torque effect of epitaxially grown noncollinear antiferromagnet Mn_(3)Sn films.However,this method is not suitable for large-scale industrial preparation.In this study,amorphous Mn_(3)Sn films and Mn_(3)Sn/Py heterostructures were prepared using magnetron sputtering on silicon substrates.The spin-torque ferromagnetic resonance measurement demonstrated that only the conventional spin-orbit torque effect generated by in-plane polarized spin currents existed in the Mn_(3)Sn/Py heterostructure,with a spin-orbit torque efficiency of 0.016.Additionally,we prepared the perpendicular magnetized Mn_(3)Sn/CoTb heterostructure based on amorphous Mn_(3)Sn film,where the spin-orbit torque driven perpendicular magnetization switching was achieved with a lower critical switching current density(3.9×10^(7)A/cm^(2))compared to Ta/CoTb heterostructure.This research reveals the spin-orbit torque effect of amorphous Mn_(3)Sn films and establishes a foundation for further advancement in the practical application of Mn_(3)Sn materials in spintronic devices.

关 键 词：SPINTRONICS noncollinear antiferromagnetism spin-orbit torque 

分 类 号：O469[理学—凝聚态物理]