1 | Early stages in the formation of a magnetic flux vortex. The figure shows the penetration of a magnetic field into a thin strip of high- Tc superconducting material, which is imbedded in a normal metal, and the formation of a magnetic flux vortex. The red surface is an isosurface for the magnetic induction. The isosurface follows the top and bottom of the superconducting strip (not shown). The field penetrates from the left and right sides. Thermal fluctuations cause "droplets" of magnetic flux to be formed in the interior of the strip. As time progresses, these droplets may coalesce into vortices. One vortex is being spawned from the left sheet of the isosurface. These computations were done on Argonne's IBM SP system. |