Extended Data Fig. 5: Distribution of the orientational order parameter Ψ6(r).
From: Melting of a skyrmion lattice to a skyrmion liquid via a hexatic phase
a-c, Representative color maps derived from the distribution of Ψ6(r) at the solid (H = 667 Oe), the hexatic (H = 1108 Oe), and the liquid phase (H = 1203 Oe) respectively. The hue and the brightness of the color maps denote the phase angle and the amplitude of Ψ6(r) respectively, as illustrated by the inset in a. d-f, The corresponding Ψ6(r) distribution shown by arrows.
