Journal
SURFACE SCIENCE
Volume 605, Issue 5-6, Pages 616-622Publisher
ELSEVIER
DOI: 10.1016/j.susc.2010.12.028
Keywords
Vibrations of adsorbed molecules; Density functional calculations; Chemisorption
Categories
Funding
- Japan Society for the Promotion of Science
- Natural Sciences and Engineering Research Council of Canada
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We compute vibrational energy levels of a water molecule and shifts due adsorption on Pt(111). The calculations are done using a variation of a recently proposed algorithm that solves the vibrational Schrodinger equation and accounts for anharmonicity and coupling. A small set of adaptable basis functions is used to obtain the vibrational spectrum directly from ab initio data, obviating the need for an analytical potential energy function. The method is general and fast - all calculations were performed on a personal computer. It is a black-box and easily usable tool that will enable surface scientists to compute approximate spectra of adsorbed complexes without neglecting anharmonicity and coupling effects. (C) 2010 Elsevier B.V. All rights reserved.
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