ELECTRONIC-STRUCTURE AND MAGNETOOPTICAL EFFECTS IN CESB

The electronic structure and magneto-optical spectra of CeSb have been calculated using the self-consistent local-density approximation with explicit on-site Coulomb parameters for the correlated f state of cer ium. The essential electronic structure of cerium antimonide consists of one occupied f band, predominantly with orbital m = -3 character an d spin sigma = 1 located 2 eV below the Fermi level and interacting wi th broad Sb p bands crossing E(F). The m-dependent p-f hybridization l eads to large magnetic anisotropy and magneto-optical spectra in bette r agreement with experiment than obtained with the standard local-spin -density approximation.