Pinning Mechanisms in a-Axis-Oriented and Multilayers
نویسندگان
چکیده
a-axis-oriented planes perpendicular to the substrates) and multilayers have been grown by dc sputtering on (100) susbstrates and characterized by the refinement of the structure from x-ray spectra. The results show that interfacial structure (thickness fluctuations, interdiffusion, etc.) of the a axis are similar to the c-axis oriented superlattices. The angular dependence of the resistivity in the mixed state allows us to study the interplay among different types of dissipation mechanisms, as, for example, intrinsic, surface, microscopic defects, and superlattice-induced pinning mechanisms. These mechanisms are relevant in different angular, magnetic field, and temperature regimes.
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