Extended Data Fig. 9: Schematic representations of AFM Bloch (anti)merons and bimerons.
From: Antiferromagnetic half-skyrmions and bimerons at room temperature
Colours and legend are as in Extended Data Fig. 8. a, b, Variants of AFM Bloch antimerons with winding number w = −1 and topological charges Q = ±1/2, which are interrelated as in Extended Data Fig. 8. c, d, Variants of AFM Bloch merons with winding number w = +1 and topological charges Q = ±1/2. e, f, Magnified views of the AFM textures in Fig. 2c, with double-headed arrows indicating the sense of rotation of spins away from the core. The regions shown correspond to an antimeron (e) and a meron (f). Again, XMLD-PEEM enables us to distinguish merons from antimerons, but topological variants that only differ by the sign of Q are indistinguishable. g, AFM Bloch bimeron with topological numbers Q = +1, w = 0 obtained by merging b with d. Once again, the additive property of topological numbers applies. h, Merging a with d results in a TTMP. It should be noted that the overall AFM backgrounds in the bimerons are uniform.
