2-PLASMON EXCITATIONS IN METALLIC CLUSTERS

被引：21

作者：

CATARA, F

CHOMAZ, P

VANGIAI, N

机构：

[1] IST NAZL FIS NUCL,SEZ CATANIA,I-95129 CATANIA,ITALY

[2] GRAD ACCELERATEUR NATL IONS LOURDS,F-14021 CAEN,FRANCE

[3] INST PHYS NUCL LYON,DIV PHYS THEOR,F-91406 ORSAY,FRANCE

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.48.18207

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A boson-expansion method is used to study one- and two-boson states in metallic clusters. A jellium model and local-density-approximation energy-density-functional theory are the starting point for obtaining the basic bosons describing electron excitations. A boson mapping allows one to diagonalize the residual interaction between bosons. For the example of the Na-21(+) cluster, it is found that strong anharmonic effects appear in the electronic excitation spectrum.

引用

页码：18207 / 18213

页数：7

共 23 条

[1] ANHARMONICITIES OF NUCLEAR VIBRATIONS FROM PERIODIC MEAN-FIELD ORBITS [J].