A network approach to artificial spin ice

A network model for field and quenched disorder effects in artificial spin ice.
Zoe Budrikis, Paolo Politi and R L Stamps
New Journal Physics 14, 045008 (2012)

The network of states accessible from the +x polarized configuration (the large red node), at a field strength of h = 11.5, for (a) a perfect system and (b) a system where the lower-left corner island can be flipped independently of the others.