First Principles Study of Adsorption of $O_{2}$ on Al Surface with Hybrid Functionals

Details First Principles Study of Adsorption of $O_{2}$ on Al Surface with Hybrid Functionals First Principles Study of Adsorption of $O_{2}$ on Al Surface with Hybrid Functionals

2011-11-07

arxiv.org/abs/1111.1490v1

Physics

Condensed Matter

Materials Science

14 pages, 5 figures

Scientific paper

Adsorption of $O_{2}$ molecule on Al surface has been a long standing puzzle for the first principles calculation. We have studied the adsorption of $O_{2}$ molecule on the Al(111) surface using hybrid functionals. In contrast to the previous LDA/GGA, the present calculations with hybrid functionals successfully predict that $O_{2}$ molecule can be absorbed on the Al(111) surface with a barrier around 0.2$\thicksim$0.4 eV, which is in good agreement with experiments. Our calculations predict that the LUMO of $O_{2}$ molecule is higher than the Fermi level of the Al(111) surface, which is responsible for the barrier of the $O_{2}$ adsorption.

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