Superconductivity and Stoichiometry in the BSCCO-family Materials

I have two purposes in writing this report. One is to provide experimental data that has been reproduced in different laboratories, and so can be viewed as reliable, to serve as the basis for theoretical models. The other is to argue that there is a close connection between changes observed in the superconducting properties (gap size and temperature dependence, critical current, magnetic field dependence) and normal state properties (symmetry of electronic states, topology of Fermi surface, c-axis resistivity).