Figure 5. The ground state phase diagram in absence of demagnetisation energy contribution.
The scalar value as a function of disk sample diameter
and external magnetic field
computed for the ground state at every phase space point in absence of demagnetisation energy contribution for (a) a 3d mesh and (c) for a 2d mesh. In order to better resolve the boundaries of the Helical (H) state region, the skyrmion number
is shown in (b,d). (e) The magnetisation configurations of three identified ground states as well as the out-of-plane magnetisation component
along the horizontal symmetry line.