Dynamically stabilized magnetic skyrmions

Zhou, Y., Iacocca, Ezio, Awad, A. A., Dumas, R. K., Zhang, F. C., Braun, H. B. and Åkerman, J. (2015) Dynamically stabilized magnetic skyrmions. Nature Communications, 6 (1). p. 8193. ISSN 2041-1723

[img]
Preview
Text
ncomms9193.pdf - Published Version
Available under License Creative Commons Attribution Non-commercial Share Alike 4.0.

Download (2MB) | Preview
Official URL: https://doi.org/10.1038/ncomms9193

Abstract

Magnetic skyrmions are topologically non-trivial spin textures that manifest themselves as quasiparticles in ferromagnetic thin films or noncentrosymmetric bulk materials. So far attention has focused on skyrmions stabilized either by the Dzyaloshinskii–Moriya interaction (DMI) or by dipolar interaction, where in the latter case the excitations are known as bubble skyrmions. Here we demonstrate the existence of a dynamically stabilized skyrmion, which exists even when dipolar interactions and DMI are absent. We establish how such dynamic skyrmions can be nucleated, sustained and manipulated in an effectively lossless medium under a nanocontact. As quasiparticles, they can be transported between two nanocontacts in a nanowire, even in complete absence of DMI. Conversely, in the presence of DMI, we observe that the dynamical skyrmion experiences strong breathing. All of this points towards a wide range of skyrmion manipulation, which can be studied in a much wider class of materials than considered so far.

Item Type: Article
Subjects: F200 Materials Science
F300 Physics
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 03 Oct 2019 14:04
Last Modified: 11 Oct 2019 13:34
URI: http://nrl.northumbria.ac.uk/id/eprint/40978

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics