Formalism of collective electron excitations in fullerenes

被引：25
作者：
Verkhovtsev, A. [1 ,2 ]
Korol, A. V. [1 ]
Solov'yov, A. V. [1 ]
机构：
[1] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany
[2] St Petersburg State Polytech Univ, St Petersburg 195251, Russia
来源：
EUROPEAN PHYSICAL JOURNAL D | 2012年 / 66卷 / 10期
关键词：
SIMPLE METAL-CLUSTERS; PLASMON EXCITATIONS; C-60; RESONANCES; PHYSICS;
D O I：
10.1140/epjd/e2012-30177-2
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A formalism for the description of collective electron excitations in fullerenes by inelastic scattering of fast electrons within the plasmon resonance approximation is presented. Considering the system as a spherical shell of a finite width, we show that the differential cross section is defined by three plasmon excitations, namely two coupled modes of the surface plasmon and the volume plasmon. The interplay of the three plasmons appears due to the electron diffraction of the fullerene shell. Plasmon modes of different angular momenta provide dominating contributions to the differential cross section depending on the transferred momentum.
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页数：11
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