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Theory of the anomalous Rayleigh dispersion at H/W(110) surfaces

Bungaro, C.
•
De Gironcoli, S.
•
Baroni, S.
1996
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
The nature of the anomalies observed in the helium-atom scattering (HAS) and electron energy-loss (EELS) spectra of hydrogenated W(110) surfaces is investigated by calculating the full dispersion of the Rayleigh mode, using density-functional perturbation theory. We find excellent agreement between our calculations and the upper anomalous branch which is observed with both HAS and EELS. The lower branch-which is only detected by HAS-is instead not predicted. A hitherto unrecognized mechanism possibly responsible for the appearance of the second branch is proposed.
DOI
10.1103/PhysRevLett.77.2491
WOS
WOS:A1996VG67400037
Archivio
http://hdl.handle.net/20.500.11767/15943
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-4243798037
Diritti
closed access
Soggetti
  • Settore FIS/03 - Fisi...

Scopus© citazioni
45
Data di acquisizione
Jun 7, 2022
Vedi dettagli
Web of Science© citazioni
41
Data di acquisizione
Mar 25, 2024
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