HIGH-TEMPERATURE MAGNETOCONDUCTIVITY OF YBA2CU3O7-DELTA - RECONSIDERATION OF THE MAKI-THOMPSON CONTRIBUTION

The magnetoconductivity of YBa2CU3O7-delta was measured in magnetic fi elds B up to 12 T in temperatures up to 2.55T(c) for B parallel to c a nd up to 1.7T(c) for B parallel to ab. Negligible Maki-Thompson (MT) t erms in the superconducting fluctuations have often been inferred from similar published data. We find that these data as well as ours can b e well described by including the MT terms and the previously neglecte d density-of-states effects. Therefore, it cannot be concluded from ma gnetoconductivity alone that MT terms are negligible, and all previous such analyses must be reexamined.