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Título: | Collective electronic excitations in a potassium-covered Be surface |
Autor: | Echeverry, J. P. CSIC; Chulkov, Eugene V. CSIC ORCID; Silkin, Viatcheslav M. CSIC ORCID | Palabras clave: | Density functional theory Collective excitations Surface states Jellium model |
Fecha de publicación: | nov-2010 | Editor: | Wiley-VCH | Citación: | Physica Status Solidi - C 7(11-12): 2640-2643 (2010) | Resumen: | We investigate within a two-component jellium model the collective electronic excitations in a one-monolayer (1ML) potassium covered beryllium surface. The calculations of the surface dynamical response properties have been performed with one-particle energies and wave functions derived from the Kohn-Sham density-functional theory. The dispersion relation for the surface plasmon modes as well as the real and imaginary parts of the induced dynamical charge density oscillations are presented. Comparison of the collective modes in the 1ML K/Be system with that of a clean Be surface is made. | Descripción: | 4 páginas, 4 figuras. | Versión del editor: | http://dx.doi.org/10.1002/pssc.200983842 | URI: | http://hdl.handle.net/10261/44185 | DOI: | 10.1002/pssc.200983842 | ISSN: | 1862-6351 | E-ISSN: | 1610-1642 |
Aparece en las colecciones: | (CFM) Artículos |
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