Analysis of the resistive transition in Bi2Sr2CaCu2O8+delta epitaxial thin films

Electrical resistivities of epitaxial Bi2Sr2CaCu2O8+$?$ films near the superconducting transition have been studied. The analysis of the data was performed self-consistently in terms of two-dimensional Aslamazov-Larkin theory for temperatures above the transition and within the context of the Kosterlitz-Thouless theory at temperatures below the mean-field transition temperature. A quantitative agreement between experimental data and theory was found confirming the picture of a highly two-dimensional behavior of macroscopic fluctuations connected with the superconducting transition in Bi2Sr2CaCu2O8+$?$ with no measurable effect of interplane coupling on the in-plane electrical-transport properties.