Dynamic transition of current-driven single-skyrmion motion in a room-temperature chiral-lattice magnet.

ABSTRACT: Driving and controlling single-skyrmion motion promises skyrmion-based spintronic applications. Recently progress has been made in moving skyrmionic bubbles in thin-film heterostructures and low-temperature chiral skyrmions in the FeGe helimagnet by electric current. Here, we report the motion tracking and control of a single skyrmion at room temperature in the chiral-lattice magnet Co₉Zn₉Mn₂ using nanosecond current pulses. We have directly observed that the skyrmion Hall motion reverses its direction upon the reversal of skyrmion topological number using Lorentz transmission electron microscopy. Systematic measurements of the single-skyrmion trace as a function of electric current reveal a dynamic transition from the static pinned state to the linear flow

SUBMITTER: Peng L 

PROVIDER: S-EPMC8613223 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature