STRONG SPIN-DEPENDENT ELECTRON CORRELATION-EFFECTS IN PHOTOEMISSION FROM ITINERANT MAGNETS

The Fe 2p photoemission of ferromagnetic iron shows a dichroism which indicates a strong difference in hybridization for spin-up and spin-do wn electrons. In contrast, the dichroism of the localized Mn surface a lloys reveals intense unscreened satellite structure. The spin polariz ation of the core hole is quantified using the dichroism in the Fe L3M 2,3M2,3 Auger spectrum measured with the light helicity vector perpend icular to the magnetization direction. The observations in the 3d meta ls are in strong contradiction with the expectations from an independe nt-particle model.