Figure 3: Contrasting the positively charged skyrmion with the composite fermion (CF) hole.
From: Fractionally charged skyrmions in fractional quantum Hall effect
(a,b) show charge density profiles of a CF hole and a positively charged fractional skyrmion. Their spin polarization, defined by 
where 
and 
are the spatial densities of spin-up and spin-down composite fermions, is shown in c,d, respectively. The minimum/maximum values of the colour bars in each panel are: (a) 0.006/0.357, (b) 0.266/0.333, (c) 1.000/1.000, (d) −0.695/1.000. The disk shown has a radius of 12.5 
.
