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Título: | Physisorption of helium on a TiO2(110) surface: Periodic and finite cluster approach |
Autor: | Lara Castells, María Pilar de CSIC ORCID ; Aguirre, Néstor F. CSIC ORCID; Mitrushchenkov, Alexander O. | Palabras clave: | Finite cluster approach Perturbation theory Many-body symmetry-adapted Periodic density functional calculations Helium Metal oxide surfaces Rutile TiO2(110) surface Basis set superposition error Wave-function-based correlated methods Physisorption Wannier orbitals Embedding |
Fecha de publicación: | 2012 | Editor: | Elsevier | Citación: | Chemical Physics 399: 272- 280 (2012) | Resumen: | As a proto-typical case of physisorption on an extended transition-metal oxide surface, the interaction of a helium atom with a TiO2(110)-(1 x 1) surface is studied here by using finite cluster and periodic approaches and both wave-function-based (post Hartree-Fock) quantum chemistry methods and density functional theory. Both classical and advanced finite cluster approaches, based on localized Wannier orbitals combined with one-particle embedding potentials, are applied to provide (reference) coupled-cluster and second-order Moller-Plesset interaction energies. It is shown that, once the basis set is specifically tailored to minimize the basis set superposition error, periodic calculations using the Perdew-Burke-Ernzerhof functional yield short and medium-range interaction potentials in very reasonable agreement with those obtained using the correlated wave-function-based methods, while small long-range dispersion corrections are necessary to reproduce the correct asymptotic behavior. This study is aimed at a subsequent simulation of helium mediated deposition on oxide surfaces. | Versión del editor: | https://doi.org/10.1016/j.chemphys.2011.07.013 | URI: | http://hdl.handle.net/10261/87969 | DOI: | 10.1016/j.chemphys.2011.07.013 | Identificadores: | issn: 0301-0104 |
Aparece en las colecciones: | (CFMAC-IFF) Artículos |
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