A density functional perturbation theory study of Cu(111) surface dynamics and phonon-induced surface charge density (SCD) oscillations shows that the subsurface phonon resonances such as S-3, first predicted by embedded-atom methods, trigger large SCD charge-density oscillations, thus explaining the large helium atom scattering intensity from the anomalous longitudinal resonance found in most metal surfaces. The strong coupling between certain phonons and SCD oscillations is shown to have implications in inelastic electron tunneling spectroscopy and other manifestations of electron-phonon interactions at metal surfaces.

Chis, V., Hellsing, B., Benedek, G., Bernasconi, M., Chulkov, E., Toennies, J. (2008). Large surface charge density oscillations induced by subsurface phonon resonances. PHYSICAL REVIEW LETTERS, 101(20), 206102 [10.1103/PhysRevLett.101.206102].

Large surface charge density oscillations induced by subsurface phonon resonances

BENEDEK, GIORGIO;BERNASCONI, MARCO;
2008

Abstract

A density functional perturbation theory study of Cu(111) surface dynamics and phonon-induced surface charge density (SCD) oscillations shows that the subsurface phonon resonances such as S-3, first predicted by embedded-atom methods, trigger large SCD charge-density oscillations, thus explaining the large helium atom scattering intensity from the anomalous longitudinal resonance found in most metal surfaces. The strong coupling between certain phonons and SCD oscillations is shown to have implications in inelastic electron tunneling spectroscopy and other manifestations of electron-phonon interactions at metal surfaces.
Articolo in rivista - Articolo scientifico
fononi di superfici, calcoli da principi primi
English
206102
Chis, V., Hellsing, B., Benedek, G., Bernasconi, M., Chulkov, E., Toennies, J. (2008). Large surface charge density oscillations induced by subsurface phonon resonances. PHYSICAL REVIEW LETTERS, 101(20), 206102 [10.1103/PhysRevLett.101.206102].
Chis, V; Hellsing, B; Benedek, G; Bernasconi, M; Chulkov, E; Toennies, J
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/6379
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