Sub-surface incorporation of oxygen on Ag(001) during molecular dissociation

Authors
de Mongeot, FB Cupolillo, A Rocca, M Valbusa, U
Citation
Fb. De Mongeot et al., Sub-surface incorporation of oxygen on Ag(001) during molecular dissociation, CHEM P LETT, 302(3-4), 1999, pp. 302-306
Citations number
34
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
302
Issue
3-4
Year of publication
1999
Pages
302 - 306
Database
ISI
SICI code
0009-2614(19990319)302:3-4<302:SIOOOA>2.0.ZU;2-C
Abstract
We report evidence for the occurrence of sub-surface oxygen incorporation d uring the dissociation process of admolecules. The process is observed for O-2 chemisorbed on Ag(001) at a surface temperature of 100 K, where thermal ly activated sub-surface diffusion is inactive. The phenomenon occurs both when dissociation is induced thermally or by electron bombardment. EELS pea ks corresponding to the vibration of adatoms and of sub-surface oxygen are observed. (C) 1999 Elsevier Science B.V. All rights reserved.