Guided skyrmion motion along pinning array interfaces

We examine ac driven skyrmions interacting with the interface between two different obstacle array structures. consider drive amplitudes at which in a bulk lattice undergo only localized motion and show that when an is introduced, directed skyrmion transport can occur along interface. The be guided by straight also turn corners to follow For square embedded pinning radius, we find all four primary symmetry directions under same fixed drive. map where or translating occurs as function of driving parameters. Our results suggest new method for controlling based on interfaces.