Multiple scattering effects on spin polarized XPD spectra from W 4f levels

Spin polarization in core-level photoemission using linearly polarized light can occur through the spin-orbit interaction. Although this has purely atomic origin, in sold state there would be considerable effect of scattering of the photoelectrons from neighboring atoms, which is referred as photoelectron diffraction. We have theoretically investigated the effect of multiple scattering on angular and energy dependence of the spin polarization of W 4f core-level photoemission spectra from SV(110) surface. and found a large difference from the case of an isolated atom. Scattering from surrounding atoms have improved the agreement with experiment.