Skyrmion oscillations in magnetic nanorods with chiral interactions

Article

关键词: LATTICE;    NANOSTRUCTURES;    MOTION;    MNSI;    FEGE;   

DOI  :  10.1103/PhysRevB.95.024409

来源: SCIE

【 摘 要 】

We report that in cylindrical nanorods with chiral interactions spin textures corresponding to spatial skyrmion oscillations can be stabilized depending on the initial state, as revealed by micromagnetic calculations. The skyrmion oscillation, or skyrmion-chain state, occurs when the diameter of the rod is larger than the helical pitch length of the material, and the number of skyrmions on the chain is proportional to the length of the nanorod. The topological charge is localized, breaking translational symmetry, but in the presence of a uniaxial anisotropy, or upon the application of an external field, the localization disappears and a single skyrmion line is formed. These findings provide a deeper understanding of the interplay between geometry and topology, and show how spatial confinement specifically in curved solids can stabilize skyrmionic spin textures.

【 授权许可】

Free