Data di Pubblicazione:
2008
Citazione:
Crucial electronic contributions to measures of surface diffusion by He atom scattering / G. Fratesi, G. Alexandrowicz, M.I. Trioni, G.P. Brivio, W. Allison. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 77:23(2008 Jun 27), pp. 235444.1-235444.5. [10.1103/PhysRevB.77.235444]
Abstract:
We examine theoretically recent He atom scattering measurements of Na/Cu(001), identifying a nontrivial relation between the dynamics of the electron distribution and that of the Na ions. The magnitude of the calculated variations in the charge density, and their dependence on the local density of adsorbates, account for the correlated three-dimensional (3D) motion experimentally observed. The results of this study further highlight the sensitivity of helium scattering to the electron distribution of the sample and point out the role of electronic contributions in high-resolution measures of surface dynamics.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
helium-atom; metal-surface; CU(001); spectroscopy; diffraction; adsorption; energy
Elenco autori:
G. Fratesi, G. Alexandrowicz, M.I. Trioni, G.P. Brivio, W. Allison
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