Jump to main content
Jump to site search


Magnetic skyrmions without the skyrmion Hall effect in a magnetic nanotrack with perpendicular anisotropy

Author affiliations

Abstract

Magnetic skyrmions have potential applications in novel information devices with excellent energy efficiency. However, the skyrmion Hall effect (SkHE) could cause skyrmions moving in a nanotrack to get annihilated at the track edge. In this work, we discovered that the SkHE is depressed by modifying the magnetic structure at the edge of a track, and thus the skyrmion can move in almost a straight line at a high speed. Unlike the inner part of a track with perpendicular magnetic anisotropy, the edge layer exhibits in-plane magnetic anisotropy, and the orientation of edge moments is opposite that at the perimeter of skyrmions nearby. As a result, an enhanced repulsive force acts on the skyrmion to oppose the Magnus force that causes the SkHE. Additionally, the Dzyaloshinskii–Moriya interaction (DMI) constant of the edge layer also matters. When there is no DMI at the edge layer, the transverse displacement of the skyrmion can be depressed effectively when the width of the edge layer is sufficiently large. However, when the inner part and the edge share the same DMI constant, non-monotonically varied transverse displacement occurs because of the Néel-wall-like structure at the edge layer.

Graphical abstract: Magnetic skyrmions without the skyrmion Hall effect in a magnetic nanotrack with perpendicular anisotropy

Back to tab navigation

Supplementary files

Publication details

The article was received on 20 Mar 2017, accepted on 20 May 2017 and first published on 23 May 2017


Article type: Paper
DOI: 10.1039/C7NR01980G
Citation: Nanoscale, 2017, Advance Article
  •   Request permissions

    Magnetic skyrmions without the skyrmion Hall effect in a magnetic nanotrack with perpendicular anisotropy

    Y. Zhang, S. Luo, B. Yan, J. Ou-Yang, X. Yang, S. Chen, B. Zhu and L. You, Nanoscale, 2017, Advance Article , DOI: 10.1039/C7NR01980G

Search articles by author

Spotlight

Advertisements