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

The pinning and depinning of antiferromagnetic (AFM) domain wall is certainlythe core issue of AFM spintronics. In this work, we study theoretically theN\'eel-type domain wall pinning and depinning at a notch in anantiferromagnetic (AFM) nano-ribbon. The depinning field depending on the notchdimension and intrinsic physical parameters are deduced and also numericallycalculated. Contrary to conventional conception, it is revealed that thedepinning field is remarkably dependent of the damping constant and thetime-dependent oscillation of the domain wall position in the weakly dampingregime benefits to the wall depinning, resulting in a gradual increase of thedepinning field up to a saturation value with increasing damping constant. Aone-dimensional model accounting of the internal dynamics of domain wall isused to explain perfectly the simulated results. It is demonstrated that thedepinning mechanism of an AFM domain wall differs from ferromagnetic domainwall by exhibiting a depinning speed typically three orders of magnitude fasterthan the latter, suggesting the ultrafast dynamics of an AFM system.

Ultrafast depinning of domain wall in notched antiferromagnetic nanostructures