Optical reflectance spectroscopy of surface states in H2 chemisorption on W(100)

Surface reflectance spectroscopy is used to determine optical transitions associated with the electronic structure of a W(100) surface during H2 chemisorption. Correlation with photoemission and field-emission data attributes these transitions to excitations from intrinsic and adsorbate-induced levels to final states at the Fermi energy. © 1974 The American Physical Society.