title: Comparative vibrational study on alkali coadsorption with CO and O on Ni(111) and Cu(111).
abstract: High-resolution electron energy loss spectroscopy was used to investigate alkali (Na, K) coadsorption with CO and O on Cu(111) and Ni(111). Measurements provided new insights in these systems. A CO-induced weakening of the alkali-substrate bond was revealed on both substrates. The effect is more pronounced for the Na+CO/Ni(111) system. Submonolayers of alkalis were found to promote the preferential population of the subsurface site for O/Cu(111) but not for O/Ni(111).
authors.affiliation: Dipartimento di Fisica Rende (Cs), Università degli Studi della Calabria, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Politano
authors.forename: V
authors.initials: V
authors.lastname: Formoso
authors.forename: G
authors.initials: G
authors.lastname: Chiarello