COLLECTIVE MODES IN TIGHT-BINDING SUPERLATTICES WITH CHAIN SHEETS

被引：0

作者：

CUI, SM ^{[1
]}

TSAI, CH ^{[1
]}

机构：

[1] CHINA CTR ADV SCI & TECHNOL,WORLD LAB,CTR THEORET PHYS,BEIJING 100080,PEOPLES R CHINA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1991年 / 3卷 / 21期

关键词：

D O I：

暂无

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

By extending our plasma theory of superlattices on the basis of several tight-binding metallic sheets, we have derived dispersion relations for the collective excitations of a tight-binding superlattice consisting of alternating layers of one chain sheet and N identical layers. An expression for the Coulomb interaction is worked out for quasi-one dimensional systems in terms of a screened factor. The plasma frequency is obtained as a function of the wavevector analytically as well as numerically for several specific cases.

引用

页码：3729 / 3738

页数：10

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