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.
The parabolic pins in this sample are in a square array at a density of np = 0.19 (Pinning site density) and are all of strength fp = 5.0 (Pinning site strength) Higher matching fields, up to and including the fourth matching field, are shown. At the higher fields, domains of different vortex lattice orientation can be seen moving through the sample, with domain boundaries marked by dislocations.
Return to periodic pinning page
Return to java movie index
Return to main page
Created by: Cynthia Olson and Jared Groth
Last modified: 12/18/96