ANGULAR-DEPENDENCE OF THE CRITICAL CURRENTS IN MO77GE23 GE MULTILAYERS/

We examine the critical current densities of superconducting/insulatin g Mo77Ge23/Ge multilayers in magnetic fields applied at arbitrary angl es with respect to the superconducting layers. In these measurements, we demonstrate the existence of a threshold field, below which the cri tical current is governed only by the perpendicular component of the a pplied field. Also, we observe that there exists a critical angle that divides two different regimes of vortex pinning. Finally, we relate t hese results to existing theories of vortices in layered superconducto rs.