MAGNETIZATION AND TRANSPORT CURRENTS IN THIN SUPERCONDUCTING FILMS

The critical-state behavior of an infinitely long type-II superconduct ing thin-film strip is theoretically analyzed for an arbitrary sequenc e of applied transport currents and perpendicular magnetic fields. Inc luded are solutions for applied field only, transport current only, tr ansport current applied to a sample initially in the remanent critical state, ac applied field, ac transport current, and simultaneously app lied field and transport current. The results are compared side by sid e with corresponding solutions for the more familiar slab geometry; th ere are striking differences in behavior.