The movie illustrates the higher matching fields for a square array of pinning sites. Vortices enter the pinning region at the left and right edges of the sample, increasing the vortex density inside the sample.
Circles represent vortices.
At the higher fields, domains of different vortex lattice orientation can be seen moving through the sample, with domain boundaries marked by dislocations. Square array of pinning sites. Vortices dropped every 300 md steps.