PHENOMENOLOGICAL INTERPRETATIONS OF THE AC HALL-EFFECT IN THE NORMAL-STATE OF YBA2CU3O7

ac and de magnetotransport data in the normal state of YBa2Cu3O7 are a nalyzed within Fermi-liquid and non-Fermi-liquid models. In the Fermi- liquid analysis we use the Fermi surface deduced from band-structure c alculations and angular-resolved photoemission experiments and assume that the electron relaxation rate varies over the Fermi surface. The n on-Fermi-liquid models are the two-dimensional Luttinger-liquid model and the charge-conjugation-symmetry model. We find that the existing e xperimental data can be adequately fit by any of these models. This wo rk provides a framework for the analysis of experiments that may discr iminate among these models.