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Vibrational properties of the Pt(111)-p(2x2)-K surface superstructure

AuthorsRusina, G. G.; Eremeev, S. V.; Borisova, S. D.; Chulkov, Eugene V.
Keywords[PACS] Phonon states and bands, normal modes, and phonon dispersion
[PACS] Phonons or vibrational states in low-dimensional structures and nanoscale materials
[PACS] Surface and interface dynamics and vibrations
[PACS] Adsorbate vibrations
Issue Date10-Aug-2008
CitationPhysics of the Solid State 50(8): 1570-1578 (2008)
AbstractThe vibrational spectra of the Pt(111)-p(2x2)-K ordered surface superstructure formed on the platinum surface upon adsorption of 0.25 potassium monolayer are calculated using the interatomic interaction potentials obtained within the tight-binding approximation. The surface relaxation, the dispersion of surface phonons, the local density of surface vibrational states, and the polarization of vibrational modes of adatoms and substrate atoms are discussed. The theoretical results are in good agreement with the recently obtained experimental data.
Description9 pages, 4 figures.-- PACS nrs.: 63.20.Dj, 63.22.+m, 68.35.Ja, 68.43.Pq.-- Original Russian Text published in Fizika Tverdogo Tela, 2008, Vol. 50, No. 8, pp. 1510–1517.
Publisher version (URL)http://dx.doi.org/10.1134/S1063783408080313
Appears in Collections:(CFM) Artículos
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