Abstract
The chemisorption of atomic oxygen on Cu(001) is treated using a many-electron embedding theory in which the copper lattice is modeled as a 25-atom cluster. Of the three high symmetry sites investigated—fourfold, bridge, and atop-atom—the fourfold site is found to be most stable, with a dissociation energy of ∼6.1 eV (r⊥=0.7 Å), while the atop-atom configuration corresponds to the least stable site for atomic oxygen adsorption. The atop-atom site yields a radical-like state, ‘‘O−’’, whereas the open sites involve an oxide-like state, ‘O2−’, for oxygen. The principal valence ionization from oxygen is found to occur ∼8–10 eV below the vacuum level. The results of calculations on smaller clusters, CunO, n=2–5, are found to be in qualitative agreement with the results for Cu25O.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 9:10 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 10, 2024, 12:52 a.m.) |
Indexed | 1 year, 6 months ago (Feb. 10, 2024, 9:26 a.m.) |
Issued | 38 years, 5 months ago (April 1, 1987) |
Published | 38 years, 5 months ago (April 1, 1987) |
Published Print | 38 years, 5 months ago (April 1, 1987) |
@article{Madhavan_1987, title={Interaction of atomic oxygen with copper clusters}, volume={86}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.451913}, DOI={10.1063/1.451913}, number={7}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Madhavan, P. V. and Newton, M. D.}, year={1987}, month=apr, pages={4030–4037} }