Magnetoresistance of REBa2CU3O7-delta (RE = Y, Gd, Eu, Tm, La) thin films in the vicinity of the critical temperature

Measurements of the magnetoresistance in the vicinity of the superconductin g transition of REBa2Cu3O7-delta (RE = Y, Gd, Eu, Tm, La) thin films are re ported. The results are analyzed in terms of a recent theoretical model for renormalized critical fluctuations of the superconducting order parameter. Fundamental physical parameters, the in-plane and out-of-plane coherence l engths and the magnitude of the specific heat jump at the superconducting t ransition are extracted. (C) 2000 Elsevier Science B.V. All rights reserved .