典型文献
Orbit-Transfer Torque Driven Field-Free Switching of Perpendicular Magnetization
文献摘要：
The reversal of perpendicular magnetization(PM)by electric control is crucial for high-density integration of low-power magnetic random-access memory.Although the spin-transfer torque and spin-orbit torque technologies have been used to switch the magnetization of a free layer with perpendicular magnetic anisotropy,the former has limited endurance because of the high current density directly through the junction,while the latter requires an external magnetic field or unconventional configuration to break the symmetry.Here we propose and realize the orbit-transfer torque(OTT),that is,exerting torque on the magnetization using the orbital magnetic moments,and thus demonstrate a new strategy for current-driven PM reversal without external magnetic field.The perpendicular polarization of orbital magnetic moments is generated by a direct current in a few-layer WTe2 due to the existence of nonzero Berry curvature dipole,and the polarization direction can be switched by changing the current polarity.Guided by this principle,we construct the WTe2/Fe3GeTe2 heterostructures to achieve the OTT driven field-free deterministic switching of PM.
文献关键词：
中图分类号：
作者姓名：
Xing-Guo Ye;Peng-Fei Zhu;Wen-Zheng Xu;Nianze Shang;Kaihui Liu;Zhi-Min Liao
作者机构：
State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics,School of Physics,Peking University,Beijing 100871,China
文献出处：
引用格式：
[1]Xing-Guo Ye;Peng-Fei Zhu;Wen-Zheng Xu;Nianze Shang;Kaihui Liu;Zhi-Min Liao-.Orbit-Transfer Torque Driven Field-Free Switching of Perpendicular Magnetization)[J].中国物理快报（英文版）,2022(03):89-93
A类：
Fe3GeTe2
B类：
Orbit,Transfer,Torque,Driven,Field,Free,Switching,Perpendicular,Magnetization,reversal,perpendicular,magnetization,PM,by,electric,control,crucial,high,density,integration,low,power,magnetic,random,access,memory,Although,spin,transfer,torque,technologies,have,been,used,free,layer,anisotropy,former,has,limited,endurance,because,current,directly,through,junction,while,latter,requires,external,field,unconventional,configuration,break,symmetry,Here,propose,realize,OTT,that,exerting,using,orbital,moments,thus,demonstrate,new,strategy,driven,without,polarization,generated,few,WTe2,due,existence,nonzero,Berry,curvature,dipole,direction,can,switched,changing,polarity,Guided,this,principle,construct,heterostructures,achieve,deterministic,switching
AB值：
0.600145
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
