Dispersion relation due to plasmon excitation in nanostructures by charged particles

One of the most remarkable features of nanostructured materials is that their optical response due to plasmon excitation is very sensitive to their geometry and composition. The interaction of charged particles with the electron gas of the considered system is one of the most used methods to excite...

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Bibliographic Details
Published inVacuum Vol. 84; no. 1; pp. 262 - 265
Main Authors Gervasoni, J.L., Segui, S., Arista, N.R.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 25.08.2009
Subjects
Charged particles
Dielectrics
Dispersions
Excitation
Nanocomposites
Nanomaterials
Nanostructure
Nanostructures
Plasmons
Plasmons
71.45.Gm-73.21.Hb
Nanostructures
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Summary:One of the most remarkable features of nanostructured materials is that their optical response due to plasmon excitation is very sensitive to their geometry and composition. The interaction of charged particles with the electron gas of the considered system is one of the most used methods to excite and study collective excitations (plasmons). In this work we study the similarities and differences arising in these excitations due to the interaction of the charged particles with different dielectric functions in a variety of nanoscopic systems (capillaries, wires, tubules, spheres). The obtained dispersion relations are very sensitive to the chosen dielectric functions, an important aspect due to the increasing requirement of devices of reduced dimensions for their application in different areas.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0042-207X
1879-2715
DOI:10.1016/j.vacuum.2009.05.020