Rolling Motion of Rigid Skyrmion Crystallites Induced by Chiral Lattice Torque.

ABSTRACT: Magnetic skyrmions are topologically protected spin textures with emergent particle-like behaviors. Their dynamics under external stimuli is of great interest and importance for topological physics and spintronics applications alike. So far, skyrmions are only found to move linearly in response to a linear drive, following the conventional model treating them as isolated quasiparticles. Here, by performing time and spatially resolved resonant elastic X-ray scattering of the insulating chiral magnet Cu₂OSeO₃, we show that for finite-sized skyrmion crystallites, a purely linear temperature gradient not only propels the skyrmions but also induces continuous rotational motion through a chiral lattice torque. Consequently, a skyrmion crystallite undergoes a rolling motion

SUBMITTER: Jin H 

PROVIDER: S-EPMC11450986 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature