Vortex Dynamics, Pinning, And Angle-Dependent Motion On Moire Patterns

We examine the pinning and dynamics of Abrikosov vortices interacting with pinning centers placed in a moire pattern for varied moire lattice angles. We find a series of locking angles at which the critical current shows a pronounced dip corresponding to lattices in which the vortices can flow along quasi-one-dimensional channels. At these locking angles, the vortices move with a finite Hall angle. Additionally, for some lattice angles there are peaks in the critical current produced when the substrate has a quasiperiodic character that strongly reduces the vortex channeling. Our results should be general to a broad class of particlelike assemblies moving on moire patterns.