ELECTRODYNAMICS OF HIGH-T-C CUPRATES - LOW-FIELD MICROWAVE-ABSORPTION

Local electrodynamics of a high-T-c superconductor (HTS) is elaborated based on the concept of the complex conductivity of a hard type II su perconductor containing weak links (WLs). The contributions of the two -fluid, the flux motion, and the weak link network to the total conduc tivity are taken into account. The expression for the surface impedanc e is derived and compared with the experimental results. Applicability of the model to the magnetically modulated microwave absorption (MMMA ) experiments is discussed.