Symmetry-Governed Dynamics of Magnetic Skyrmions Under Field Pulses

TL;DR

This paper classifies chiral magnetic skyrmions based on their dynamic responses to magnetic field pulses, emphasizing the role of symmetry and revealing diverse behaviors relevant for future spintronic applications.

Contribution

It provides a comprehensive classification of chiral skyrmions according to their dynamics under field pulses, highlighting the influence of magnetic texture symmetry.

Findings

Identified three classes of skyrmion dynamics: stationary, translating, rotating.

Demonstrated the role of texture symmetry in skyrmion behavior.

Suggested implications for skyrmion-based information processing.

Abstract

Topological magnetic solitons, such as skyrmions, exhibit intriguing particle-like properties that make them attractive for fundamental research and practical applications. While many magnetic systems can host skyrmions as statically stable configurations, chiral magnets stand out for their ability to accommodate a wide diversity of skyrmions with arbitrary topological charges and varied morphologies. Despite extensive investigation, a complete understanding of chiral magnetic skyrmions has remained elusive. We present a classification of all chiral skyrmions, demonstrating three classes based on their response to external magnetic field pulses: stationary, translating, and rotating. We highlight the role of magnetic texture symmetry in this classification. Skyrmions with varied dynamics offer avenues for exploring phenomena like skyrmion-skyrmion scattering that might be crucial for future applications.