COLLECTIVE AND SINGLE-PARTICLE ASPECTS IN THE OPTICAL-RESPONSE OF METAL MICROCLUSTERS

被引：82
|
作者：
YANNOULEAS, C
BROGLIA, RA
机构：
[1] VIRGINIA COMMONWEALTH UNIV, DEPT PHYS, RICHMOND, VA 23284 USA
[2] NIELS BOHR INST, DK-2100 COPENHAGEN 0, DENMARK
来源：
PHYSICAL REVIEW A | 1991年 / 44卷 / 09期
关键词：
D O I：
10.1103/PhysRevA.44.5793
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The photoabsorption response of the spherical, neutral Na8, Na-20, and Na40 clusters is studied in the random-phase approximation built upon a jellium background. Special attention is given to Na40, which displays a particularly broad line shape. The theory provides an overall account of the observation in terms of the interplay between collective and individual electronic motion, and thus evidence for the importance of Landau damping in small metal clusters. The physics of this relaxation phenomenon as a quantum-size signature of the Coulomb interaction is analyzed through simple models.
引用
收藏
页码：5793 / 5802
页数：10
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