X-ray absorption spectra at the O 1s edge are presented for O(2×2)/Ni(111), O(2×1)/Cu(110), and O/Si(111)-(7×7). The spectra yield information on the distribution of O 2p and np state character in the unoccupied states. The data are compared with that for oxides. We conclude that there is considerable covalency in the chemisorptive bond and that, even for transition metals, this arises mainly from interaction between the O 2p levels and the substrate sp bands.
Covalency in Oxygen Chemisorption as probed by X-ray Absorption
M Pedio;
1989
Abstract
X-ray absorption spectra at the O 1s edge are presented for O(2×2)/Ni(111), O(2×1)/Cu(110), and O/Si(111)-(7×7). The spectra yield information on the distribution of O 2p and np state character in the unoccupied states. The data are compared with that for oxides. We conclude that there is considerable covalency in the chemisorptive bond and that, even for transition metals, this arises mainly from interaction between the O 2p levels and the substrate sp bands.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
