Fig. 7: Imaging magnetic skyrmions at the surface of Cu₂OSeO₃.

a Image of B_z showing skyrmions. The faint patterns observed in the background are due to the roughness of the sample surface, which – even in the FP state – produces small fluctuations in B_z. b Locations of individual skyrmions extracted from (a). c Skyrmion pair distribution function G_p(r).