PHOTOEMISSION INVESTIGATION FOR GDCU

The relativistic cne-step model of photoemission in its version for se veral atoms per unit cell is applied to the intermetallic compound GdC u. Here we present normal and off-normal photoelectron spectra from th e (110) surface of antiferromagnetic GdCu. The theoretical photoemissi on investigation is based on muffin-tin potentials calculated self-con sistently within the tight-binding LMTO method. Ln order to interpret the various transitions in the calculated spectra, we discuss our phot oemission results in terms of the corresponding band structure along t he Sigma-direction in the Brillouin zone. Furthermore, we compare our results with experimental data. A reasonable overall agreement between measured and calculated spectra has been found.