Fig. 10: The order annihilation process.
a Experimentally measured length and skyrmion number versus time under the action of U0 = 4.0 V, starting from a pentamer. Lengths are measured with an error of \(\pm\)0.2 μm. b The numerically simulated length and skyrmion number versus time, starting from a pentamer at U = 2.0 V. Insets show experimentally observed and simulated POMs before and after the annihilation. c Preimages and skyrmion number density in the marked cross-section along z at different times. The integration of skyrmion number density corresponds to the skyrmion number marked on the left. The colour code used in the preimages and the selected orientations of preimages are marked on the bottom, the colour code used in the skyrmion number density is presented on the right. The frequency f = 3000 Hz and scale bars correspond to 10 μm.
