Fig. 2: Generation of AF meron–antimeron pairs using an electrical pulse.
From: Antiferromagnetic half-skyrmions electrically generated and controlled at room temperature
a, XMLD–PEEM image of a 180° AFDW located in the top arm of the device. White and black contrast corresponds to Néel vector orientation perpendicular and parallel to the X-ray linear polarization (blue double-headed arrow in top right of b), respectively. The spin axis variation across the AFDW width is depicted by red arrows. The spatial scale bar corresponds to 600 nm. b, The AFDW after applying a 1 ms electrical pulse with 21 V (1.2 × 107 A cm−2) amplitude along the [0\(\bar{1}\)0] CuMnAs crystal direction (yellow arrow), showing sections of reversed chirality. The chirality changes are associated with AF vortices and antivortices. c,d, Simulated XMLD–PEEM image and Néel vector heatmaps for an AFDW showing chirality reversal. The colour bar represents the magnitude of the Néel vector along each component (Lx,y,z). e,f, Characteristic Bloch-type meron (e) and antimeron (f) with out-of-plane core spin component, located at positions highlighted by red and white filled circles in c.
