BLUE-SHIFT OF THE MIE PLASMA FREQUENCY IN AG CLUSTERS AND PARTICLES

被引：262

作者：

TIGGESBAUMKER, J

KOLLER, L

MEIWESBROER, KH

LIEBSCH, A

机构：

[1] UNIV ROSTOCK, FACHBEREICH PHYS, D-18051 ROSTOCK, GERMANY

[2] FORSCHUNGSZENTRUM, INST FESTKORPERFORSCH, D-52425 JULICH, GERMANY

来源：

PHYSICAL REVIEW A | 1993年 / 48卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.48.R1749

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Photodepletion spectroscopy is used to measure the optical activity of sputtered Ag ionic clusters with up to 70 atoms. With decreasing cluster size the giant resonance caused by collective excitation of the valence electrons shifts to higher frequencies. This blue shift is qualitatively explained in terms of a reduced s-d screening interaction in the surface region of the particles.

引用

页码：R1749 / R1752

页数：4