Low-coverage ordered phases of hydrogen on Ni(110)

Three new submonolayer phases of hydrogen on Ni(110) with periodicities c(2×6), c(2×4), and c(2×6) and respective coverages 13, and 23 monolayers were observed and analyzed with the use of He-diffraction techniques. The corrugation functions provide a direct picture of the adatom configurations and give further insight into the interplay of adatom-substrate and adatom-adatom interactions at adsorbate densities up to one monolayer. © 1983 The American Physical Society.