Band structure effects on the Be(0001) acoustic surface plasmon energy dispersion
Abstract
We report first-principles calculations of acoustic surface plasmons on the (0001) surface of Be, as obtained in the random-phase approximation of many-body theory. The energy dispersion of these collective excitations has been obtained along two symmetry directions. Our results show a considerable anisotropy of acoustic surface plasmons, and underline the capability of experimental measurements of these plasmons to map the electron-hole excitation spectrum of the quasi two-dimensional Shockley surface state band that is present on the Be(0001) surface. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Department
Physics
Publication Date
5-9-2008
Journal Title
Physica Status Solidi A-Applications and Materials Science
Publisher
WILEY-V C H VERLAG GMBH
Digital Object Identifier (DOI)
10.1002/pssa.200778156
Document Type
Article
Recommended Citation
Silkin, V. M.; Pitarke, J. M.; Chulkov, E. V.; Diaconescu, B.; Pohl, Karsten; Vattuone, L.; Savio, L.; Hofmann, P. H.; Farias, D.; Rocca, M.; and Echenique, P. M., "Band structure effects on the Be(0001) acoustic surface plasmon energy dispersion " (2008). Physica Status Solidi A-Applications and Materials Science. 99.
https://scholars.unh.edu/physics_facpub/99
Rights
Copyright © 2008 WILEY-VCH Verlag
