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Application of van der Waals Density Functional to an Extended System: Adsorption of Benzene and Naphthalene on Graphite

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 نشر من قبل Svetla Chakarova Kaeck
 تاريخ النشر 2006
  مجال البحث فيزياء
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It is shown that it is now possible to include van der Waals interactions via a nonempirical implementation of density functional theory to describe the correlation energy in electronic structure calculations on infinite systems of no particular symmetry. The vdW-DF functional [Phys. Rev. Lett. 92, 246401 (2004)] is applied to the adsorption of benzene and naphthalene on an infinite sheet of graphite, as well as the binding between two graphite sheets. Comparison with recent thermal desorption data [Phys. Rev. B 69, 535406 (2004)] shows great promise for the vdW-DF method.



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