Giant interface spin-orbit torque in NiFe/Pt bilayers  

作　　者：Shu-Fa Li Tao Zhu 李树发;朱涛(College of Electronics and Information Engineering,Guangdong Ocean University,Zhanjiang 524088,China;Beijing National Laboratory for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]College of Electronics and Information Engineering,Guangdong Ocean University,Zhanjiang 524088,China [2]Beijing National Laboratory for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Physics B》2020年第8期413-417,共5页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.11574375).

摘　　要：The current-induced spin-orbit torque(SOT)plays a dominant role to manipulate the magnetization in a heavy metal/ferromagnetic metal bilayer.We separate the contributions of interfacial and bulk spin-orbit coupling(SOC)to the effective field of field-like SOT in a typical NiFe/Pt bilayer by planar Hall effect(PHE).The effective field from interfacial SOC is directly measured at the transverse PHE configuration.Then,at the longitudinal configuration,the effective field from bulk SOC is determined,which is much smaller than that from interfacial SOC.The giant interface SOT in NiFe/Pt bilayers suggests that further analysis of interfacial effects on the current-induced manipulation of magnetization is necessary.

关 键 词：spin-orbit coupling planar Hall effect spin-orbit torques spin Hall effect 

分 类 号：TM228[一般工业技术—材料科学与工程]