C $_{60}$电子能量损失谱中体积和表面等离子体相互作用
Interplay of the volume and surface plasmons in the electron energy loss spectra of C$_{60}$
摘要：
本文给出了电子非弹性散射过程中C_（60）集体激发的实验和理论研究结果。电子能量损失谱的形状被观察到改变时，散射角的增加。这种变化所产生的由于电子衍射的富勒烯壳所描述的一个新的理论模型，该模型将富勒烯作为一个有限宽度的球壳，并占两种模式的表面等离子体和体积等离子体以及。结果表明，在小角度下，非弹性散射截面主要由表面等离子体激元的对称模式决定，而在较大角度下，反对称表面等离子体激元和体积等离子体激元的贡献变得突出。
英文摘要：
The results of a joint experimental and theoretical investigation of the C60 collective excitations in the process of inelastic scattering of electrons are presented. The shape of the electron energy loss spectrum is observed to vary when the scattering angle increases. This variation arising due to the electron diffraction of the fullerene shell is described by a new theoretical model which treats the fullerene as a spherical shell of a finite width and accounts for the two modes of the surface plasmon and for the volume plasmon as well. It is shown that at small angles, the inelastic scattering cross section is determined mostly by the symmetric mode of the surface plasmon, while at larger angles, the contributions of the antisymmetric surface plasmon and the volume plasmon become prominent.
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