SPIN-RESOLVED FE L(3)M(45)M(45) AUGER TRANSITION ON AND OFF-RESONANCE- THE EFFECT OF EXCHANGE-CORRELATION

Spin-resolved Fe L(3)M(45)M(45) Auger-electron spectra were recorded w ith on- and off-resonant (2p(3/2)-->3d) photons. The spectra agree wi th convolution of spin-resolved Fe density of states, except in the de gree of spin polarization which was found to be higher (lower) than th e spin polarization of Fe valence electrons when using on- (off-) reso nant photon excitation. This is consistent with a reduction of the Aug er transition probability of the spin-parallel two-hole final state as compared to spin-antiparallel state, which indicates the importance o f exchange correlation in 3d itinerant ferromagnets such as Fe.