VOLUME DEPENDENCE OF ANDERSON HYBRIDIZATION IN CUBIC CECD AND CEAG

We have undertaken a first-principles theoretical study of the Anderso n hybridization in cubic CeCd and CeAg as a function of volume reducti on. We present results for the hybridization width DELTA (epsilon) in both the J = 5/2 multiplet and in the GAMMA8, GAMMA7 Crystal field sta tes of the f1 Ce configuration. We also calculate the hybridization co ntribution to the magnetic transition temperature. This is found to in crease with pressure but is smaller than the experimental values, indi cating that the Coulomb exchange contribution to the magnetic coupling is not negligible in these compounds.