Transport phenomena in the mixed and normal state of (Bi1.6Pb0.4)Sr2Ca2(Cu1-xFex)(3)O-y epitaxial thin films

We had performed a study on magnetoresistivity, Seebeck, Nernst and Hall ef fects in the mixed and normal state for Bi2223 thin films in magnetic field s between 0 and 5 T and in the temperature range 5-300 K. The critical temp eratures, the Hall concentration, the Nernst and Seebeck coefficients depen d strongly on the iron content in the samples. From our experimental data i n the mixed state and fluctuation regime, the upper critical field slope (d B(c2)/dT) = -2.55 T/K was obtained, corresponding to ab-plane coherence len gth xi(ab) = 14 Angstrom. The experimental data are in agreement with the p redictions of the time-dependent Ginsburg-Landau theory.