English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Magnetic skyrmions and antiskyrmions are characterised by an integertopological charge $\mathcal Q =\mp 1$, describing the winding of the magneticorientation. Half-integer winding numbers, $\mathcal Q=\pm \frac{1}{2}$, can beobtained for magnetic vortices (merons). Here, we discuss the physics ofmagnets with fractional topological charge which is neither integer norhalf-integer. We argue that in ferromagnetic films with cubic anisotropy,textures with $\mathcal Q=\pm\frac{1}{6} $ or $\pm\frac{1}{8}$ arise naturallywhen three or more magnetic domains meet. We also show that a single magneticskyrmion with $\mathcal Q =-1$ can explode into four fractional defects, eachcarrying charge $\mathcal Q=-\frac{1}{4}$. Additionally, we investigate a pointdefect with a non-quantised fractional charge ($\mathcal Q\neq \frac{n}{m},n,m\in\mathbb{Z}$) which can move parallel to a magnetic domain wall. Onlydefects with fractional charge lead to an Aharonov-Bohm effect for magnons. Weinvestigate the resulting forces on a fractional defect due to magnon currents.

Fractional Topological Charges in 2D Magnets