Chirality-Based Vortex Domain-Wall Logic Gates

In planar ferromagnetic nanowires, domain walls take the form of circulating vortices of magnetism. The authors use micromagnetic simulations to show that if binary data are encoded using the two states of vortex circulation (clockwise or counterclockwise), short nanowire sections and junctions can be made to perform a full range of logic operations. This offers a novel platform for spintronic devices.