Néel skyrmions in confined geometries

Degeneracies and fluctuations of Néel skyrmions in confined geometries.
Rick Keesman, A. O. Leonov, P. van Dieten, Stefan Buhrandt, G. T. Barkema, Lars Fritz, and R. A. Duine 
Phys. Rev. B 92, 134405 (2015)

Simulations snapshots of spin systems of size L×L=3 for different parameter values and temperatures with the parameter D/Jchosen such that the pitch length p=8. The periodic boundary is drawn as a red solid line and spin vectors are represented by colored arrows where the color scales linearly with the zˆ component of the vector to highlight spin texture