SIMPLE-MODEL FOR THE UNIFIED TREATMENT OF WANNIER AND FRENKEL EXCITONS

被引：27

作者：

EGRI, I

机构：

[1] Institut für Theoretische Physik, RWTH Aachen, Aachen

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 10期

关键词：

D O I：

10.1088/0022-3719/12/10/016

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A simple model is used to discuss excitons of arbitrary binding and localisation. It consists of two one-dimensional tight-binding bands, one being the full valence band and the other the empty conduction band. In addition, there are on-site electron-hole and nearest-neighbour dipole-dipole interaction terms in the Hamiltonian. Explicit expressions for the exciton band and wavefunction are derived. These reduce to the Frenkel and Wannier exciton, respectively, in the appropriate limits.

引用

页码：1843 / 1854

页数：12

共 16 条

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