Ultrafast laser-driven topological spin textures on a 2D magnet

This paper investigates the manipulation of magnetic properties in two-dimensional (2D) van der Waals (vdW) materials using ultrashort laser pulses. The study focuses on CrCl₃ ferromagnets, demonstrating that laser pulses can not only manipulate magnetic domains but also induce the formation and control of topological meron and antimeron spin textures. These spin quasiparticles are created within ~100 ps after excitation and exhibit dynamic behavior, including motion, collision, and annihilation with spin wave emission. The findings suggest significant potential for using photonic driving forces to explore spin textures in 2D magnetic materials for magneto-optical topological applications.

Mara Strungaru, Mathias Augustin, Elton J. G. Santos