Extended Data Fig. 1: Detailed overview of the vortex ring with circulating magnetic vorticity (presented in Fig. 2), shown in successive slices through the loop.
From: Experimental observation of vortex rings in a bulk magnet
The magnetization within each slice is represented by the streamlines. The colourscale in the top row indicates the \(\hat{x}\) component of the magnetization, while the colour scale in the bottom row indicates the \(\hat{x}\) component of the vorticity. The vorticity associated with the vortex structure extending throughout the pillar changes sign in slice d due to the presence of a Bloch point, while the vortex–antivortex pair conserves its vorticity throughout. In slices b and c, the magnetization forms a structure similar to that of a cross-tie wall, which dissolves as the pair unwinds, at slices a and d, resulting in a single vortex.
