Physical review. B, Condensed matter · 1994 · 22 citations · 19 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsSolid State PhysicsSurface ScienceElectron-phonon InteractionsMetalsScattering TheorySurface CrystallographySurface PhysicsSurface SpectroscopyDispersion CurvesElectron Energy LossElectron Energy-loss SpectroscopyElectron-phonon ScatteringInelastic ScatteringPhonon Dispersion RelationsPhonon Dispersion StudiesResonance
An intense longitudinal-surface-phonon resonance in addition to the Rayleigh mode is observed on Ag(001) by inelastic helium-atom scattering (HAS). This mode, which is only barely visible by electron-energy-loss spectroscopy, is similar to the one previously detected by HAS for Cu(001). This observation provides additional evidence for the pseudocharge model previously invoked to explain the anomalous longitudinal resonance observed in several metal surfaces by HAS. The observed differences between Cu(001) and Ag(001) are also shown to be consistent with the pseudocharge model.
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Atom-surface scattering theory
V. Bortolani, A.C. Levi · Rivista Del Nuovo Cimento · 1986 · 97 citations
Nature of surface-phonon anomalies in noble metals
C. S. Jayanthi, H. Bilz, W. Kress et al. · Physical Review Letters · 1987 · 95 citations