6533b85efe1ef96bd12bf40d
RESEARCH PRODUCT
Near-field coupling of a point-like dipolar source with a thin metallic film: Implication for STM plasmon excitations
Renaud MartyRenaud MartyG. Colas Des FrancsChristian GirardChristian GirardArnaud ArbouetArnaud Arbouetsubject
Materials sciencePhysics::OpticsGeneral Physics and Astronomy02 engineering and technologyElectron01 natural sciencesMetalsymbols.namesakeOptics0103 physical sciencesPoint (geometry)[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/MicroelectronicsPhysical and Theoretical Chemistry010306 general physicsPlasmonCondensed matter physicsbusiness.industrySurface plasmon021001 nanoscience & nanotechnologyDipoleFourier transformvisual_artvisual_art.visual_art_mediumsymbols[ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics0210 nano-technologybusinessExcitationdescription
International audience; Recent experiments have shown that it is possible to excite surface plasmons on metallic films by injecting tunnel electrons from a sharp metal tip located in the immediate proximity of the sample. When working close to a bare metal film, the excitation of surface plasmons gives rise to typical circular patterns that can be recorded in both image and Fourier planes. Important physical parameters of surface plasmon propagation such as their propagation length can be extracted from these images. In this Letter, we discuss theoretically the physics of the plasmonic excitations induced by a STM tip.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-04-01 | Chemical Physics Letters |