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Título: | Quantum trajectories in elastic atom-surface scattering: Threshold and selective adsorption resonances |
Autor: | Sanz, Ángel S. CSIC ORCID; Miret-Artés, Salvador CSIC ORCID | Fecha de publicación: | 13-dic-2004 | Editor: | American Institute of Physics | Citación: | Journal of Chemical Physics 122(1): 014702 (2005) | Resumen: | The elastic resonant scattering of He atoms off the Cu(117) surface is fully described with the formalism of quantum trajectories provided by Bohmian mechanics. Within this theory of quantum motion, the concept of trapping is widely studied and discussed. Classically, atoms undergo impulsive collisions with the surface, and then the trapped motion takes place covering at least two consecutive unit cells. However, from a Bohmian viewpoint, atom trajectories can smoothly adjust to the equipotential energy surface profile in a sort of sliding motion; thus the trapping process could eventually occur within one single unit cell. In particular, both threshold and selective adsorption resonances are explained by means of this quantum trapping considering different space and time scales. Furthermore, a mapping between each region of the (initial) incoming plane wave and the different parts of the diffraction and resonance patterns can be easily established, an important issue only provided by a quantum trajectory formalism. | Descripción: | 12 pages, 13 figures. | Versión del editor: | http://dx.doi.org/10.1063/1.1828032 | URI: | http://hdl.handle.net/10261/21482 | DOI: | 10.1063/1.1828032 | ISSN: | 0021-9606 |
Aparece en las colecciones: | (ICMAT) Artículos (CFMAC-IFF) Artículos |
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