AUTHOR=Wang Wenbin , Sun Jianmin , Li Hang 

TITLE=Stabilization of skyrmions in two-dimensional systems with next-nearest-neighbor exchange interactions

JOURNAL=Frontiers in Physics

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2022.995902

DOI=10.3389/fphy.2022.995902

ISSN=2296-424X

ABSTRACT=We study, in the absence of a magnetic field, the stabilization of skyrmions in a single layer ferromagnet
 in the presence of second nearest neighbor exchange interactions. The stabilization of skyrmion not only depends on magnetic anisotropy but also the second nearest neighbor exchange interaction. 
It stabilizes bimeron in the presence of in-plane magnetic anisotropy while it enhances the stabilization of ferromagnetic background in the presence of perpendicular magnetic anisotropy. Numerical simulation shows that the second nearest neighbor exchange interaction is a viable parameter to control the creation and annihilation of skyrmionic states with a small size. This study may open an alternative avenue to the
generation, stabilization, and control of magnetic skyrmions in the two dimensional thin films.