Substrate effects on surface-plasmon spectra in metal-island films

Journal Article · Sun Mar 15 04:00:00 EST 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.35.3753· OSTI ID:6975029

Royer, P; Goudonnet, J P; Warmack, R J; Ferrell, T L

The effects of the local dielectric environment on the surface-plasmon resonances of annealed metal-island films are studied experimentally and modeled theoretically. Silver-island films were annealed to produce spheroidal shaped particles which exhibit well-resolved resonances in polarized, angle-resolved, absorption spectra. These resonances are shifted in different amounts by the depolarizing interaction with the underlying substrate. They are also affected by additional dielectric coverages or separation of the particle film from the substrate. Cross-section calculations based upon a nonretarded, single-particle, dielectric interaction for these various configurations are presented and found to be in agreement with experimental observations.

• Research Organization: Health and Safety Research Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6975029
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 35:8; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ANNEALING
CHALCOGENIDES
ELEMENTS
FILMS
HEAT TREATMENTS
INTERACTIONS
METALS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PLASMONS
QUARTZ
QUASI PARTICLES
RESONANCE
SILICON COMPOUNDS
SILICON OXIDES
SILVER
SUBSTRATES
TRANSITION ELEMENTS