24 August 2017 – Physicists from Forschungszentrum Jülich and a mathematician from RWTH Aachen University have calculated that in thin metal layer systems, not only the tiny magnetic vortices known as skyrmions, but also their antiparticles, so-called "anti-skyrmions", can occur. These are also made up of vortex-shaped, well-ordered spin structures, but differ in the orientation of their spin. Using supercomputing methods, the scientists were furthermore able to suggest a material system to prove the existence of anti-skyrmions experimentally.