Spin polarization of Na atoms on Fe(0 0 1): comparison of the spin-polarized metastable-atom deexcitation spectroscopy (SPMDS) measurements and electronic structure calculation

The spin-resolved electronic states of Na atoms adsorbed on Fe(0 0 1) surfaces have been calculated using full-potential linearized-augmented-plane-wave (FLAPW) method to interpret our spin-polarized metastable-atom deexcitation spectroscopy (SPMDS) measurements reported previously. The spin dependence of the local density of states in the vacuum region calculated for the Fe(0 0 1)-c(2 × 2)-Na and (2 × 2)-Na structures was found to be consistent with the spin asymmetry in the SPMDS spectra and its Na coverage dependence.