Configurable pixelated skyrmions on nanoscale magnetic grids

Topological spin textures can serve as non-volatile information carriers. Here we study the current-induced dynamics of an isolated magnetic skyrmion on a nanoscale square-grid pinning pattern formed by orthogonal defect lines with reduced anisotropy. The square grid be pixelated quantized size grid. We demonstrate that position, size, and shape are electrically configurable. center is to may show hopping motion instead continuous motion. find Hall effect perfectly prohibited due harnessed build future programmable racetrack memory, multistate logic computing device. Our results will basis for digital storage computation based topological artificial patterns.