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

Antiferromagnetic skyrmion crystal (AF-SkX), a regular array ofantiferromagnetic skyrmions, is a fundamental phenomenon in the field ofcondensed-matter physics. So far, only very few proposals have been made torealize the AF-SkX, and most based on three-dimensional (3D) materials. Herein,using first-principles calculations and Monte-Carlo simulations, we report theidentification of AF-SkX in two-dimensional lattice of Janus monolayerCrSi2N2As2. Arising from the broken inversion symmetry and strong spin-orbitcoupling, large Dzyaloshinskii-Moriya interaction is obtained in Janusmonolayer CrSi2N2As2. This, combined with the geometric frustration of itstriangular lattice, gives rise to the skyrmion physics and long-sought AF-SkXin the presence of external magnetic field. More intriguingly, this systempresents two different antiferromagnetic skyrmion phases, and such phenomenonis distinct from those reported in 3D systems. Furthermore, by contacting withSc2CO2, the creation and annihilation of AF-SkX in Janus monolayer CrSi2N2As2can be achieved through ferroelectricity. These findings greatly enrich theresearch on antiferromagnetic skyrmions.

Antiferromagnetic skyrmion crystal in Janus monolayer CrSi2N2As2