Manipulation of skyrmion motion by magnetic field gradients.

ABSTRACT: Magnetic skyrmions are particle-like, topologically protected magnetisation entities that are promising candidates as information carriers in racetrack memory. The transport of skyrmions in a shift-register-like fashion is crucial for their embodiment in practical devices. Here, we demonstrate that chiral skyrmions in Cu₂OSeO₃ can be effectively manipulated under the influence of a magnetic field gradient. In a radial field gradient, skyrmions were found to rotate collectively, following a given velocity-radius relationship. As a result of this relationship, and in competition with the elastic properties of the skyrmion lattice, the rotating ensemble disintegrates into a shell-like structure of discrete circular racetracks. Upon reversing the field direction, the rota

SUBMITTER: Zhang SL 

PROVIDER: S-EPMC5974091 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature