Vortex Dynamics Instabilities leading to vortex-bundle motion in superconductors are being studied via molecular dynamics simulations. The image shown is a snapshot from a molecular dynamics simulation of field-driven vortices moving in a random pinning potential background.
Black dots are vortices.
Yellow dots represent short-range pinning wells. Black trails record the path the vortices have taken. The image is courtesy of Prof. Franco Nori of the University of Michigan.