The relation between the radii and the densities of magnetic skyrmions

• 作者: Yu-Jiao Bo Wen-Wen Li Yu-Chen Guo Ji-Chong Yang
• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2021,（7）
• 所属期刊栏目: CONDENSED MATTER THEORY
• 页码范围: 146-154
• 页数: 9页
• 语种: 英文

摘要

Compared with the traditional magnetic bubble,a skyrmion has a smaller size,and better stability and therefore is considered as a very promising candidate for future memory devices.When skyrmions are manipulated,erased and created,the density of skyrmions can be varied,however the relationship between the radii and the densities of skyrmions needs more exploration.In this paper,we study this problem both theoretically and by using the lattice simulation.The average radius of skyrmions as a function of material parameters,the strength of the external magnetic field and the density of skyrmions is obtained and verified.With this explicit function,the skyrmion radius can be easily predicted,which is helpful for the future study of skyrmion memory devices.