Dipolar interactions in 2D

Phase transition in two-dimensional magnetic systems with dipolar interactions.
L.A.S. Mól and B.V. Costa
ArXiv 1109.1840 (2011)

Phase diagram of the anisotropic Heisenberg model with dipolar interactions for fixed A/J = 1 in the (D/J, T) space. The black solid line represents the transition lines as obtained using a cut-off in the dipolar interactions and the solid black line are the results obtained when full long-range interactions are consider.