Johannes Gutenberg University Mainz researchers observe antiferromagnetic skyrmion interaction

Researchers at Johannes Gutenberg University Mainz (JGU) have successfully visualized the interaction of antiferromagnetic skyrmions in real time. Skyrmions are nanometer-scale magnetic vortices that show promise for future spintronic applications, such as racetrack memory, logic gates, and unconventional computing.

In ferromagnetic systems, skyrmions typically experience the ‘skyrmion Hall effect,’ where they are deflected laterally from the direction of the driving electric current. However, the research team, including Mona Bhukta from Professor Mathias Kläui’s group, confirmed through time-resolved measurements that this effect is absent in antiferromagnetic systems. The study, published in Nature Physics, demonstrated that these skyrmions move reproducibly along straight trajectories aligned with the electrical current.

This predictable motion is considered a critical step toward developing reliable, high-frequency spintronic devices that utilize large numbers of skyrmions.