Combined potential and spin impurity scattering in cuprates

We present a theory of combined nonmagnetic and magnetic momentum-dependent impurity scattering in the d-wave superconductor. After deriving a formula for the initial suppression of the critical temperature we discuss the exp erimental data for Zn and Ni substitutions as well as electron irradiation defects in cuprates. We suggest, that the unequal pair-breaking effect of Z n and Ni may be related to a different structure of the magnetic moments in duced by these impurities.