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Photoelectron driven acoustic surface plasmons in p(2×2)K/Be(0001): Ab initio calculations

AuthorsSilkin, Viatcheslav M.; Echenique, Pedro M. ; Chulkov, Eugene V.
Issue Date2010
PublisherAmerican Physical Society
CitationPhysical Review B 81(11): 113406 (2010)
AbstractWe report on low-energy dynamical surface response properties of the p(2×2)K/Be(0001) system calculated within a first-principles approach. It is shown that a partly occupied adsorbate-induced quantum-well band dramatically affects the dynamical properties of the beryllium surface. We demonstrate clear evidence that the observed anomalous features in photoemission spectra of this and a similar system can be explained by acoustic surface plasmon excitations.
Description4 páginas, 4 figuras.-- PACS number(s): 73.21.Fg, 73.20.Mf, 79.60.Dp.-- et al.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.81.113406
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