Effects of adsorbates on electron spin polarization in low energy electron diffraction from tungsten (001): I. Disordered CO and O2 overlayers

Electron spin polarization and intensity profiles have been measured in low energy electron diffraction (LEED) for the (00) beam at θ = 13δ and ø = 0δ from W(001) as a function of surface exposure to CO and O₂. Significant changes have been observed in the profiles upon exposure to both adsorbate gases, and the implications of these results are discussed.