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. © 2008 The American Physical Society.

Fratesi, G., Alexandrowicz, G., Trioni, M., Brivio, G., Allison, W. (2008). Crucial electronic contributions to measures of surface diffusion by He atom scattering. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 77, 235444 [10.1103/PhysRevB.77.235444].

Crucial electronic contributions to measures of surface diffusion by He atom scattering

BRIVIO, GIANPAOLO;
2008

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. © 2008 The American Physical Society.
Articolo in rivista - Articolo scientifico
Surface, diffusion, density functional, spin echo, helium scattering
English
235444
Fratesi, G., Alexandrowicz, G., Trioni, M., Brivio, G., Allison, W. (2008). Crucial electronic contributions to measures of surface diffusion by He atom scattering. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 77, 235444 [10.1103/PhysRevB.77.235444].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/3903
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