Probing large area surface plasmon interference in thin metal films using photon scanning tunneling microscopy

The interference of surface plasmons can provide important information regarding the surface features of the hosting thin metal film. We present an investigation of the interference of optically excited surface plasmons in the Kretschmann configuration in the visible spectrum. Large area surface pla...

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Bibliographic Details
Published in:Ultramicroscopy 2004-08, Vol.100 (3), p.429-436
Main Authors: Passian, A., Wig, A., Lereu, A.L., Evans, P.G., Meriaudeau, F., Thundat, T., Ferrell, T.L.
Format: Article
Language:English
Subjects:
Dispersion relation
Interference
Metal thin films
Scanning probe microscopy
Surface plasmons
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Summary:The interference of surface plasmons can provide important information regarding the surface features of the hosting thin metal film. We present an investigation of the interference of optically excited surface plasmons in the Kretschmann configuration in the visible spectrum. Large area surface plasmon interference regions are generated at several wavelengths and imaged with the photon scanning tunneling microscope. Furthermore, we discuss the non-retarded dispersion relations for the surface plasmons in the probe–metal system modeled as confocal hyperboloids of revolution in the spheroidal coordinate systems.
ISSN:0304-3991
1879-2723
DOI:10.1016/j.ultramic.2003.11.018