Electric Field Control of the Skyrmion Hall Effect in Piezoelectric-Magnetic Devices

Relying on both electromechanical and micromagnetic simulations, we propose a method to control the trajectory of current-driven skyrmions using an electric field in hybrid piezoelectric-magnetic systems. By applying voltage between two lateral electrodes, transverse strain gradient is created, as result nonuniform profile piezoelectric material. Due magnetoelastic coupling, this leads force that can be used suppress skyrmion Hall angle for any given current density, if proper applied. We show works under realistic conditions, such presence disorder ferromagnet, trajectories controlled with moderate voltages. Moreover, our allows maximum density injected before annihilated at nanostrip edge increased, which increase achievable velocities.