EVIDENCE FOR THE PRESENCE OF THE MULTIPOLE PLASMON MODE ON AG SURFACES

Citation
F. Moresco et al., EVIDENCE FOR THE PRESENCE OF THE MULTIPOLE PLASMON MODE ON AG SURFACES, Physical review. B, Condensed matter, 54(20), 1996, pp. 14333-14336
Citations number
35
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
01631829
Volume
54
Issue
20
Year of publication
1996
Pages
14333 - 14336
Database
ISI
SICI code
0163-1829(1996)54:20<14333:EFTPOT>2.0.ZU;2-Q
Abstract
Collective surface electronic excitations on Ag(111) and Ag(110) have been studied by energy-loss-spectroscopy LEED. The data allow separati on of the contribution to the loss intensity due to monopole and to mu ltipole surface plasmons, thus demonstrating the existence of the latt er mode also on noble-metal surfaces. Multipole plasmons are therefore a general property of the optical response of metal surfaces whenever the charge-density profile at the interface is not too abrupt.