COLLECTIVE EXCITATIONS AND OPTICAL-ABSORPTION IN POLYENE CHAINS

被引：11

作者：

CADE, NA

YOUNG, W

机构：

[1] Department of Physics, Queen Mary College, London, El 4NS, Mile End Road

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 05期

关键词：

D O I：

10.1088/0022-3719/12/5/012

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The simple model of a polyene chain, presented in a previous paper (Chem. Phys. Lett., vol.53, p.45, 1978), is modified to include longer-range forces. A new state, the spin-polarised state, is found to be the ground state. Based on this ground state, the various collective excitations are investigated by calculating the response function. States corresponding to both singlet and triplet excitons are found as well as the continuum and more exotic states. The optical absorption due to these states is investigated and a typical exciton wavefunction is calculated.

引用

页码：819 / 836

页数：18

共 14 条

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