Electrical writing, deleting, reading, and moving of magnetic skyrmioniums in a racetrack device

Börge Göbel, Alexander F. Schäffer, Jamal Berakdar +2

A magnetic skyrmionium (also called 2$\pi$-skyrmion) can be understood as a skyrmion - a topologically non-trivial magnetic whirl - which is situated in the center of a second skyrmi…