Physics – Condensed Matter – Materials Science
Scientific paper
2003-05-16
Phys. Rev. B 69, 125106 (2004)
Physics
Condensed Matter
Materials Science
13 pages, 13 figures
Scientific paper
10.1103/PhysRevB.69.125106
A fully relativistic description of the electron energy loss and the induced radiation emission in arbitrary arrays of non-overlapping metallic cylinders is presented in terms of the multiple scattering method on the basis of vector cylindrical waves. Numerical analysis is given for dilute and dense arrays of Aluminum cylinders with a nanoscale diameter. The results of the electron energy loss spectrum are well correlated with the dispersion relation of coupled surface plasmon polaritons, and can be interpreted with an effective medium approximation when the electron runs inside the arrays. In addition, the cavity modes localized in the grooves between the cylinders can affect strongly the electron energy loss spectrum.
Ochiai Tadashi
Ohtaka Kazuhiro
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