I am a PhD student at the Institute for Theoretical Physics. Starting january 1997 I will study brains at NorthEastern University in Boston.
Vortices are excitations of the array in the form of eddy-current patterns.
It is essential to understand the rich dynamical behavior of these excitations in order to explain many of the thermal and dynamical properties of arrays. I show a number of pictures of vortices, to get more information you can click on them. There are handy-sized copies of my thesis 'Critical fluctuations and vortex dynamics in Josephson junction arrays' available. There also some animations of the above snapshots. For more information you can lookup the following preprints.