Preprint article · Journal article
Evaluation of a density functional with account of van der Waals forces using experimental data of H2 physisorption on Cu(111)
Detailed experimental data for physisorption potential-energy curves of H2 on low-indexed faces of Cu challenge theory. Recently, density-functional theory has been developed to also account for nonlocal correlation effects, including van der Waals forces. We show that one functional, denoted vdW-DF2, gives a potential-energy curve promisingly close to the experiment-derived physisorption-energy curve.
The comparison also gives indications for further improvements of the functionals.
Language: | English |
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Year: | 2011 |
ISSN: | 1550235x , 10980121 and 01631829 |
Types: | Preprint article and Journal article |
DOI: | 10.1103/PhysRevB.84.193408 |