期刊
PHYSICAL REVIEW LETTERS
卷 84, 期 4, 页码 705-708出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.705
关键词
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The dissociative adsorption of the O-2 On the Al(111) surface is studied using ab initio calculations based on density-functional theory. In the sticking probability experiments an activation barrier for the O-2 dissociation exists, but our calculations predict a barrier only for one trajectory. Also our results do not support the model of charge transfer from the surface to the molecule as a bond breaking mechanism. Instead, the increasing hybridization between O-2 orbitals and Al states, when the adsorbate approaches the slab, is significant for the dissociation.
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