摘要
通过三次样条插值结合傅里叶级数展开的计算方法,对微磁学离散计算模型的模拟结果进行优化处理,提出了一种计算磁性斯格明子和类斯格明子结构半径的方法。分别对圆形、椭圆形斯格明子进行分析,研究结果表明,该方法能够有效减少离散模型对数据取样所带来的影响,提高斯格明子及类斯格明子结构半径计算的精确度。该方法可进一步用于定量表征这类磁结构在动力学过程中出现的形变,以及研究由其形变所衍生的新物理现象和机制。
An optimization method is proposed for calculating the radius of magnetic skyrmions or skyrmion-like structures based on the simulation data from discrete micromagnetic model,by employingthe cubic spline interpolation algorithm combined with Fourier series expansion method.Using this method,the circular and elliptical shaped skyrmions have been analized.The results show that the influence of the discrete model on data sampling can be effectively reduced and the calculation accuracy of the radius of skyrmion or skyrmion-like structures is improved.The proposed method may be instructive to quantitatively characterize the shape changes of these magnetic structures in the dynamic processes,and to study the new emerging physical phenomena and mechanisms caused by their deformation.
作者
谭振宇
史宇科
陈继培
TAN Zhen-yu;SHI Yu-ke;CHEN Ji-pei(School of Physics and Materials Science,Guangzhou University,Guangdong 510623,China)
出处
《磁性材料及器件》
CAS
2024年第5期1-5,共5页
Journal of Magnetic Materials and Devices
基金
国家自然科学基金资助项目(11604059)
广东省自然科学基金项目(2017A030313020)
广州市市材料科学与工程重点学科项目(202255464)。
关键词
磁性斯格明子
斯格明子半径
微磁学模拟
离散模型
样条插值
傅里叶级数展开
magnetic skyrmion
skyrmion radius
micromagnetic simulation
discrete model
spline interpolation
Fourier series expansion
