Evidence for the presence of the multipole plasmon mode on Ag surfaces

Journal Article · Fri Nov 01 00:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.R14333· OSTI ID:397585

Moresco, F; Rocca, M ^[1]; Zielasek, V; Hildebrandt, T; Henzler, M ^[2]

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1. Centro di Fisica delle Superfici e delle Basse Temperature del CNR and Istituto Nazionale per la Fisica della Materia, Dipartimento di Fisica, via Dodecaneso 33, 16146 Genova (Italy)
2. Institut fuer Festkoerperphysik der Universitaet Hannover, Appelstrasse 2, 30167 Hannover (Germany)

Collective surface electronic excitations on Ag(111) and Ag(110) have been studied by energy-loss-spectroscopy LEED. The data allow separation of the contribution to the loss intensity due to monopole and to multipole surface plasmons, thus demonstrating the existence of the latter 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. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 397585
• Journal Information: Physical Review, B: Condensed Matter, Vol. 54, Issue 20; Other Information: PBD: Nov 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
SILVER
PLASMONS
SURFACE PROPERTIES
SOLID-STATE PLASMA
COLLECTIVE EXCITATIONS
ELECTRON SPECTROSCOPY
ELECTRON DIFFRACTION
ENERGY LOSSES