Year: 2018
Type: article
Abstract: Accurately describing surface temperature effects for the dissociation of H2 on Cu(111) remains challenging. While Ab initio Molecular Dynamics (AIMD), the current state-of-the-art method for modelling such systems, can produce accurate results, it is computationally very expensive to use for extensive testing of, for example, density functionals. A chemically accurate static corrugation model for H2 and D2 on Cu(111) dissociation was made by introducing effective three-body interactions as well as an H2-bond dependence and fitting the model to density functional theory energies for 15 113 different configurations. Reaction probabilities and rovibrational (in)elastic scattering probabilities were computed and compared to experiments and other calculations. Theoretical and experimental results are in good agreement, except for the reaction of (v = 0, J = 0) H2 where both AIMD and the newly developed static corrugation model, both based on the same underlying density functional, predict a similar deviation from the experiment.
Source: The Journal of Chemical Physics
DOI: 10.1063/1.5058271
Authors: P. Spiering, M. Wijzenbroek, M. F. Somers
Institutions: Leiden University, University of Amsterdam
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2905712009