DICHROISM IN THE SPIN-POLARIZED AUGER-ELECTRON DIFFRACTION FOR THE S FE(001) SURFACE/

The magnetic structure of the c(2 x 2) S/Fe(001) system was investigat ed using spin-polarized Auger electron diffraction. We consider the su lfur LMM Auger process following core-hole creation by polarized X-ray s. The Auger electron diffraction is described by the scattering path operator including single and multiple scattering processes. The contr ibutions of different sources of the spin polarization, such as spin p olarization of the core-hole, the scattering at the surrounding atoms and local magnetic moments, are investigated. The magnetic scattering gives the main contribution to the spin polarization.