MAGNETIC DICHROISM IN UV PHOTOEMISSION AT OFF-NORMAL EMISSION - STUDYOF THE VALENCE BANDS

Magnetic dichroism of angle-resolved UV photoemission from fee Co/Cu(0 01) thin films has been measured using linearly p-polarized light, and a coplanar geometry where the light and photoelectron wave vectors ar e antiparallel, and both are perpendicular to the in-plane sample magn etization. This geometry emphasizes information about state dispersion due to the crystalline symmetry. An orderly dispersion of the feature s in the magnetic dickroism over a wide range of off-normal angles of electron emission is related in detail to the bulk band structure of f ee Co. The measurements confirm the practical utility of magnetic dich roism experiments as a relatively simple complement to spin-resolved p hotoemission.