Stabilization and adiabatic control of antiferromagnetically coupled skyrmions without the topological Hall effect.

ABSTRACT: Synthetic antiferromagnetically coupled (SAF) multilayers provide different physics of stabilizing skyrmions while eliminating the topological Hall effect (THE), enabling efficient and stable control. The effects of material parameters, external current drive, and a magnetic field on the skyrmion equilibrium and propagation characteristics are largely unresolved. Here, we present a computational and theoretical demonstration of the large window of material parameters that stabilize SAF skyrmions determined by saturation magnetization, uniaxial anisotropy, and Dzyaloshinskii-Moriya interaction. Current-driven SAF skyrmion velocities reach ∼200 m s^-1 without the THE. The SAF velocities are about 3-10 times greater than the typical ferromagnetic skyrmion velocities. The current den

SUBMITTER: Yagan R 

PROVIDER: S-EPMC10448311 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature