Scientists have, for the first time, observed a square lattice of merons and antimerons—tiny magnetic vortices and antivortices that form in a thin plate of the helical magnet Co 8 Zn 9 Mn 3. By ...
In two-dimensional (2D) systems, the coexistence of magnetism and nontrivial topological states can induce many novel physical phenomena. A typical example is the quantum anomalous Hall effect (QAHE), ...
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