Cai, N.; Zhang, X.; Hu, Y.; Liu, Y. Nontraditional Movement Behavior of Skyrmion in a Circular-Ring Nanotrack. Nanomaterials2023, 13, 2977.
Cai, N.; Zhang, X.; Hu, Y.; Liu, Y. Nontraditional Movement Behavior of Skyrmion in a Circular-Ring Nanotrack. Nanomaterials 2023, 13, 2977.
Cai, N.; Zhang, X.; Hu, Y.; Liu, Y. Nontraditional Movement Behavior of Skyrmion in a Circular-Ring Nanotrack. Nanomaterials2023, 13, 2977.
Cai, N.; Zhang, X.; Hu, Y.; Liu, Y. Nontraditional Movement Behavior of Skyrmion in a Circular-Ring Nanotrack. Nanomaterials 2023, 13, 2977.
Abstract
As an outstanding information carrier, skyrmion is increasingly widely used in devices based on complex geometries. To achieve the skyrmion-based spintronic devices, a reasonable and feasible nanotrack is essential. In this paper, we conducted a study on the current-driven skyrmion movement in a circular-ring-shaped nanotrack. Our results suggest that the asymmetry of the inside and outside boundary of the circular ring changed the stable position of the skyrmion, causing it to move like the skyrmion Hall effect when driven by currents. Moreover, the asymmetric boundaries have advantages in enhancing or weakening the skyrmion Hall effect. Additionally, we also compared the skyrmion Hall effect from the asymmetric boundary of circular ring nanotracks with that from inhomogeneous DMI. It is found that the skyrmion Hall effect caused by the circular ring is significantly greater than that caused by the inhomogeneous DMI. These results contribute to our understanding of the skyrmion dynamics in confined geometries and offer an alternative method for controlling the skyrmion Hall effect of skyrmion-based devices.
Keywords
skyrmion; circular ring nanotrack; skyrmion Hall effect; Dzyaloshinskii–Moriya interaction
Subject
Physical Sciences, Condensed Matter Physics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
