基于磁畴壁挤压效应的斯格明子湮灭器

doi:10.11896/cldb.25020089

材料导报

2026, Vol. 40

Issue (4): 25020089-5 https://doi.org/10.11896/cldb.25020089

无机非金属及其复合材料

基于磁畴壁挤压效应的斯格明子湮灭器

张雪枫^†, 刘锐^†, 艾啸林, 刘歆, 马晓萍^*, 李慧婷, 金星日, 朴红光^*

延边大学理学院,吉林延吉 133002

Skyrmion Annihilator Based on Magnetic Domain Wall Squeezing Effect

ZHANG Xuefeng^†, LIU Rui^†, AI Xiaolin, LIU Xin, MA Xiaoping^*, LI Huiting, JIN Xingri, PIAO Hongguang^*

College of Science, Yanbian University, Yanji 133002, Jilin, China

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摘要磁斯格明子是一种具有手性自旋的纳米拓扑构型,因具有尺寸小、稳定性高、驱动电流阈值低等优点,被视为未来高密度、高速度、低能耗信息存储及逻辑运算的新型信息载体。斯格明子器件的正常运行要求及时湮灭信息处理过的斯格明子,否则会因阻塞效应而影响后续数据信号的读取,甚至导致信息失真。基于微磁学模拟,提出并研究了一种利用磁畴壁挤压效应湮灭斯格明子的全新方法。通过调控斯格明子与磁畴壁之间的排斥作用,该方法可实现斯格明子链的有效湮灭。研究表明,斯格明子的湮灭过程受到能量势垒的限制,该势垒高度与自旋极化驱动电流密度和外加磁场强度密切相关。具体而言,在相同电流密度条件下,随着磁场强度的增加,斯格明子的湮灭时间显著缩短,同时湮灭数量增加。而在固定磁场条件下,驱动电流密度对湮灭时间和湮灭数量的影响则呈现出明显的差异性:低磁场下,驱动电流密度对湮灭时间的影响更为显著,而高磁场下这种影响减弱;相反,驱动电流密度对湮灭数量的影响在高磁场下更为突出。这些发现不仅揭示了斯格明子湮灭的动力学规律,为斯格明子行为的精确调控提供了理论支持,还为基于斯格明子的自旋电子学器件研发和高效湮灭机制的设计提供了重要参考。

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	张雪枫
	刘锐
	艾啸林
	刘歆
	马晓萍
	李慧婷
	金星日
	朴红光

关键词: 斯格明子磁畴壁挤压效应微磁模拟

Abstract: Magnetic skyrmions characterized by topologically protected spin configurations have attracted significant attention in spintronics due to their nanoscale dimensions, stability across various conditions and low current thresholds for motion. These properties render skyrmions promi-sing candidates for applications in magnetic memory, logic circuits, and advanced spintronic devices. However, achieving precise control over skyrmion behaviors, including their creation, manipulation, and annihilation, remains a crucial challenge for ensuring the reliable operation of skyrmion-based technologies. In particular, the prompt and efficient annihilation of skyrmions after their utilization as digital signals is essential for preventing interference and preserving data integrity in communication devices. In this study, a novel approach to skyrmion annihilation based on the squeezing effect induced by magnetic domain walls is proposed and investigated through micromagnetic simulations. By controlling the repulsive interactions between skyrmions and magnetic domain walls, the effective annihilation of individual skyrmions and skyrmion chains can be rea-lized. The simulation results demonstrate that spin-polarized current density and magnetic field strength significantly influence the annihilation efficiency of skyrmions. Under a constant current density, increased magnetic field strength notably reduces annihilation time and enhances the number of annihilated skyrmions. Conversely, under fixed magnetic fields, the effect of current density varies according to the magnitude of the magnetic field:at lower magnetic fields, current density substantially influences annihilation time, whereas at higher magnetic fields, its primary impact is observed on the number of skyrmions annihilated. These findings elucidate the dynamic mechanisms underlying skyrmion annihilation, providing theoretical insights into the effective control of skyrmion behaviors. Investigating skyrmion annihilation mechanisms holds significant implications for advancing spintronics. This study addresses the critical challenges associated with efficient skyrmion removal, thereby contributing to the development of reliable, high-performance skyrmion-based devices. Furthermore, the proposed method enhances the precision of skyrmion manipulation and presents a viable pathway for designing next-generation spintronic systems with optimized functionality.

Key words: skyrmion magnetic domain wall squeezing effect micromagnetic simulation

出版日期: 2026-02-25 发布日期: 2026-02-13

ZTFLH:

O469

基金资助: 国家自然科学基金(12364020);吉林省自然科学基金(20240101295JC;YDZJ202501ZYTS652)

通讯作者: * 马晓萍,博士,延边大学理学院副教授、硕士研究生导师。主要从事拓扑自旋结构特性、自旋动力学及基于微纳结构磁化特性的逻辑/存储器件设计等研究。xpma1222@ybu.edu.cn
朴红光,博士,延边大学理学院物理系教授、博士研究生导师。研究方向为自旋电子学、自旋动力学、磁性功能材料、微磁学及磁性逻辑与器件的设计等。hgpiao@ybu.edu.cn

作者简介: †共同第一作者
张雪枫,延边大学理学院博士研究生,在朴红光教授的指导下进行研究。目前主要研究方向为自旋拓扑手性调控的磁振子非对称动力学行为调控。
刘锐,中国科学技术大学博士研究生,主要研究方向包括高温超导与拓扑超导、自旋电子学、微磁学模拟及相关材料物性分析等。

引用本文:

张雪枫, 刘锐, 艾啸林, 刘歆, 马晓萍, 李慧婷, 金星日, 朴红光. 基于磁畴壁挤压效应的斯格明子湮灭器[J]. 材料导报, 2026, 40(4): 25020089-5.
ZHANG Xuefeng, LIU Rui, AI Xiaolin, LIU Xin, MA Xiaoping, LI Huiting, JIN Xingri, PIAO Hongguang. Skyrmion Annihilator Based on Magnetic Domain Wall Squeezing Effect. Materials Reports, 2026, 40(4): 25020089-5.

链接本文:

https://www.mater-rep.com/CN/10.11896/cldb.25020089 或 https://www.mater-rep.com/CN/Y2026/V40/I4/25020089

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