SURFACE-PLASMON DISPERSION OF CL AG(111)

Authors
KIM JS CHEN LM KESMODEL LL GARCIAGONZALEZ P LIEBSCH A
Citation
Js. Kim et al., SURFACE-PLASMON DISPERSION OF CL AG(111), Physical review. B, Condensed matter, 56(8), 1997, pp. 4402-4405
Citations number
29
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
56
Issue
8
Year of publication
1997
Pages
4402 - 4405
Database
ISI
SICI code
0163-1829(1997)56:8<4402:SDOCA>2.0.ZU;2-W
Abstract
High-resolution electron-energy-loss spectroscopy has been employed to measure the dispersion of the surface plasmon on Ag(111) as a functio n of Cl coverage. The initial dispersion near q(parallel to)=0 is foun d to shift from positive at low Cl coverages to negative as the Cl cov erage approaches one monolayer. This effect is explained qualitatively in terms of the positive charging of the Ag substrate and the plasmon screening caused by the Cl overlayer.