首页|Tilted Perpendicular Anisotropy-Induced Spin-Orbit Ratchet Effects

Tilted Perpendicular Anisotropy-Induced Spin-Orbit Ratchet Effects

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Using micromagnetic simulations,we demonstrate the tilted perpendicular anisotropy-induced spin-orbit ratchet effect.In spin-orbit torque(SOT)-induced magnetization switching,the critical currents required to switch between the two magnetization states(upward and downward magnetization)are asymmetric.In addi-tion,in the nanowire structure,tilted anisotropy induces formation of tilted domain walls(DWs).The tilted DWs exhibit a ratchet behavior during motion.The ratchet effect during switching and DW motions can be tuned by changing the current direction with respect to the tilting direction of anisotropy.The ratchet motion of the DWs can be used to mimic the leaky-integrate-fire function of a biological neuron,especially the asymmetric property of the"potential"and"reset"processes.Our results provide a full understanding of the influence of tilted perpendicular anisotropy on SOT-induced magnetization switching and DW motion,and are beneficial for designs of further SOT-based devices.

陈彬、龙垣图、聂宇林、凌姿瑀、马天平、张瑞轩、吴义政、骆泳铭、王宁宁

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School of Electronics and Information Engineering,Hangzhou Dianzi University,Hangzhou 310018,China

Anhui Key Laboratory of Magnetic Functional Materials and Devices,School of Materials Science and Engineering,Anhui University,Hefei 230601,China

Research Center for Intelligent Computing Platforms,Zhejiang Laboratory,Hangzhou 311121,China

State Key Laboratory of Surface Physics and Department of Physics,Fudan University,Shanghai 200433,China

Wenzhou Institute of Hangzhou Dianzi University,Wenzhou 325038,China

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National Natural Science Foundation of ChinaNatural Science Foundation of Zhejiang ProvinceNatural Science Foundation of Zhejiang ProvinceBasic Scientific Research Project of Wenzhou

12274108LY23A040008LY23A040008G20220025

2024

10.1088/0256-307X/41/7/078501

中国物理快报(英文版)
中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI
影响因子：0.515
ISSN：0256-307X
年,卷(期)：2024.41(7)