Inertia in skyrmions confined to one-dimensional geometries

Authors

• Koichiro Takahashi, University of New Hampshire, DurhamFollow
• Sergey S. Pershoguba, University of New Hampshire, DurhamFollow
• Jiadong Zang, University of New Hampshire, DurhamFollow

Date Completed

Fall 2024

Abstract

Magnetic skyrmions are conventionally attributed to having zero mass. In contrast, we show that skyrmions confined to one-dimensional geometries generically acquire mass (inertia) due to the combined effects of the skyrmion Hall effect and the elasticity of the system. We investigate the massive behavior of the skyrmion for a simplified periodic model of the disorder. We show that skyrmion mass lowers the critical depinning force and leads to a step-like behavior in the skyrmion velocity-vs-current curves, which were recently observed in experiments. Finite mass could also lead to hysteresis in the velocity-vs-current curves.

First Advisor

Jiadong Zang

Second Advisor

Sergey Pershoguba

Department or Program

Physics

Degree Name

Bachelor of Science

Recommended Citation

Takahashi, Koichiro; Pershoguba, Sergey S.; and Zang, Jiadong, "Inertia in skyrmions confined to one-dimensional geometries" (2024). Honors Theses and Capstones. 876.
https://scholars.unh.edu/honors/876