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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present a theoretical study on nucleation and propagation ofantiferromagnetic skyrmionium induced by spin current injection. A skyrmionium,also known as 2{\pi} skyrmion, is a vortex-like magnetic structurecharacterized by a topological charge, the so-called skyrmion number, beingzero. We find that an antiferromagnetic skyrmionium can be generated via alocal injection of spin current with toroidal distribution. A spatially uniformspin current is then demonstrated to induce a propagation of the skyrmionium.We derive an expression for the skyrmionium velocity based on acollective-coordinate model, which agrees well with our numerical results. Ourfindings suggest a novel way of nucleating an antiferromagnetic skyrmionium, aswell as an analytical estimation of the current-driven skyrmionium velocity.

Current-driven nucleation and propagation of antiferromagnetic skyrmionium