Control of half-skyrmion movement for possible applications in memory, logic, and neuromorphic computing prototype devices

被引:0
|
作者
Zhu, Zhaozhao [1 ,2 ]
Xu, Tiankuo [1 ]
Gao, Yang [3 ]
Li, Zhuolin [1 ,4 ]
He, Zhidong [1 ,4 ]
Wang, Zhan [1 ,5 ]
Zhao, Tongyun [1 ,5 ]
Wang, Shouguo [3 ]
Cai, Jian-Wang [1 ,4 ]
Zhang, Ying [1 ,2 ]
Shen, Baogen [1 ,5 ,6 ]
机构
[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[2] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
[3] Anhui Univ, Sch Mat Sci & Engn, Anhui Key Lab Magnet Funct Mat & Devices, Hefei 230601, Peoples R China
[4] Univ Chinese Acad Sci, Coll Phys Sci, Beijing 100049, Peoples R China
[5] Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341000, Jiangxi, Peoples R China
[6] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
来源
APPLIED PHYSICS REVIEWS | 2024年 / 11卷 / 02期
基金
中国博士后科学基金; 美国国家科学基金会; 中国国家自然科学基金;
关键词
CURRENT-DRIVEN DYNAMICS; MAGNETIC SKYRMIONS; MOTION; TORQUE;
D O I
10.1063/5.0197833
中图分类号
O59 [应用物理学];
学科分类号
摘要
The topological (anti)skyrmion configurations have presented promise for versatile spintronic applications in racetrack memory, logic gates, and bio-inspired computing due to the nontrivial spin topology and convenient current-driven dynamics. However, the precise control of (anti)skyrmion-based information unit transportation via electric current in conquer of skyrmion Hall effect remains challenging especially in ferromagnetic films, limiting their integration into spintronic devices. In this study, we demonstrate the density, velocity, and direction control of half-skyrmion, with a topological charge of 1/2, in a predictable and governable way under the stimuli of electric current in Pt/Co/Ta multilayers. The particular nonsymmetric configuration of half-skyrmion introduces variable competing forces under joint manipulation of magnetic field and electric current. Thereby, the half-skyrmion application with highly controllable dynamic behavior is further proposed in prototype devices such as half-skyrmionic racetrack memory device with parallelized operation, programmable logic devices, and neuromorphic computing artificial synapses. This work sheds light on the versatile spintronic applications of half-skyrmions through electromagnetic coordinated manipulation.
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页数:9
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