Fig. 3
From: Stochastic dynamics and pattern formation of geometrically confined skyrmions
Temperature dependence of the topological number. Disk-shaped island (21-nm diameter) for B = 1.5 T. a Total topological number 〈NSk〉 averaged over 0.5 ns with error bars indicating the standard deviation. b Topological number susceptibility χN (Eq. (1)), with the dashed black lines indicating three characteristic temperatures discussed in the main text. Solid red line marks the temperature used for successive simulations
