COLLECTIVE PLASMON EXCITATIONS IN C60 CLUSTERS

被引：284

作者：

BERTSCH, GF

BULGAC, A

TOMANEK, D

WANG, Y

机构：

[1] MICHIGAN STATE UNIV, NATL SUPERCOND CYCLOTRON LAB, E LANSING, MI 48824 USA

[2] MICHIGAN STATE UNIV, CTR FUNDAMENTAL MAT RES, E LANSING, MI 48824 USA

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.67.2690

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electromagnetic response function of a C60 cluster is calculated using linear-response theory. We find that the valence electrons are quite delocalized and show collective excitations. In the low-energy part of the excitation spectrum, the lowest allowed transition at HBAR-omega almost-equal-to 3 eV is strongly screened, and the other transitions below 6 eV are moderately screened, in agreement with experiment. We also predict a giant collective resonance at an unusually high energy of almost-equal-to 20 eV.

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页码：2690 / 2693

页数：4

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