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Atomic structure and phonons of a Pb ultrathin film on the Al(100) surface

AuthorsRusina, G. G.; Borisova, S. D.; Chulkov, Eugene V.
Issue Date2014
PublisherMAIK Nauka/Interperiodica Publishing
CitationJETP Letters 100(4): 237-241 (2014)
AbstractThe atomic and phonon structures of a Pb ultrathin film on the Al(100) surface have been theoretically studied. Surface relaxation, local density of vibrational states, and polarization of the phonon modes of adatoms and atoms of a substrate have been discussed. It has been shown that the adsorption of Pb results in the oscillating relaxation of the surface of the substrate and warping of the structure in subsurface layers. Comparative analysis of the vibrational characteristics of the pure surface of the substrate and the surface with adatoms has shown that the adsorptive interaction in the system and its dynamic stability are governed by new vibrational modes that are not inherent in pure Al and Pb surfaces.
Identifiersdoi: 10.1134/S0021364014160139
e-issn: 1090-6487
issn: 0021-3640
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