MICROSCOPIC STRUCTURE OF COLLECTIVE DENSITY OSCILLATIONS C-60 AND C-70

被引：9

作者：

HANSEN, MS

PACHECO, JM

ONIDA, G

机构：

[1] UNIV COIMBRA,DEPT FIS,P-3000 COIMBRA,PORTUGAL

[2] ECOLE POLYTECH,CEA,DTA,DECM,SOLIDES IRRADIES LAB,CNRS,URA 1380,F-91128 PALAISEAU,FRANCE

来源：

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1995年 / 35卷 / 02期

关键词：

D O I：

10.1007/BF01437699

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The microscopic structure of the photo-excited plasmon excitation in C-60 and C-70 is investigated using linear response theory. One finds that Landau damping provides the main contribution to the lineshape and the linewidth of the Mie-type plasmon being able, in the case of C-70, to mask the deformation splitting effect associated with the low equilibrium symmetry (D-5h) of this fullerene. Furthermore, it is found that the coupling of the plasmon to the normal modes of vibration of the fullerenes provides a sizeable contribution to the lineshape, without significantly affecting the linewidth. This coupling is found to be active already at T = 0, exhibiting a weak temperature dependence.

引用

页码：141 / 148

页数：8