Short-range interactions in Na coadsorption with CO and O on Ni(111).
The coadsorption of Na with CO and O on Ni(111) is studied by high-resolution electron energy loss spectroscopy. Experimental evidence for a very short-range interaction between Na and coadsorbates is reported, in contrast with recent theoretical predictions overestimating nonlocal alkali-induced effects. Loss spectra show distinct features, as a consequence of different local [CO]:[Na] and [O]:[Na] stoichiometries.
Politano
Antonio
A
Dipartimento di Fisica, Università degli Studi della Calabria via ponte Bucci, 87036 Rende, Italy.
Agostino
Raffaele G
RG
Formoso
Vincenzo
V
Chiarello
Gennaro
G