Optical response of small silver clusters

被引：105

作者：

Yabana, K ^{[1
]}

Bertsch, GF

机构：

[1] Niigata Univ, Grad Sch Sci & Technol, Niigata 95021, Japan

[2] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[3] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA

来源：

PHYSICAL REVIEW A | 1999年 / 60卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.60.3809

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The time-dependent local-density approximation is applied to the optical response of the silver clusters, Ag-2, Ag-3, Ag-8, and Ag-9(+). The calculation includes all the electrons beyond the closed-shell Ag11+ ionic core, thus including explicitly the filled d shell in the response. The excitation energy of the strong surface plasmon near 4 eV agrees well with experiment. The theoretical transition strength is quenched by a factor of 4 with respect to the pure s-electron sum rule in Ag-8 due to the d electrons. Also, in this system the theoretical integrated strength function is remarkably well described by the Mie theory using the bulk dielectric constant. However, the strength is somewhat less than reported experimentally. [S1050-2947(99)04511-4].

引用

页码：3809 / 3814

页数：6

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