CALCULATION OF ANGLE-RESOLVED AUGER-ELECTRON DIFFRACTION SPECTRA TO INVESTIGATE THE SURFACE MAGNETISM OF FE(001)

Surfaces and low-dimensional systems show a special magnetic structure . A useful method to study this magnetic structure is the spin-polariz ed Auger electron spectroscopy. We have calculated the angle-resolved Auger emission from the Fe(0 0 1) surface following the creation of a core hole by polarized photons. Diffraction of the escaping Auger elec trons has been taken into account. To discuss the Fe L3VV Auger spectr um it is important to consider a multi-band picture. The Auger matrix elements strongly depend on the character of the bands, whether they a re t(2g)-like or e(g)-like, respectively. At the surface the enhanced magnetic moment and the additional splitting contribute a few percent to the spin polarization. (C) 1998 Elsevier Science B.V. All rights re served.