EXCITONS IN STRONG COUPLING POLYATOMIC CRYSTALS

被引：5
|
作者：
XIAO, JL
机构：
[1] Department of Physics, Neimenggu National Teacher's College, Tongliao
来源：
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1991年 / 83卷 / 03期
关键词：
D O I：
10.1007/BF01313407
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In this paper, the effective Hamiltonian of the exciton in strong-coupling polyatomic crystals is obtained by the method of a linear combination operator and a simple unitary transformation. The self-trapping energy of the exciton could be written as a series in alpha-1 the first term being proportion to alpha, the coupling constant. The self-trapping energy contains an extra contribution due to crossed terms between the different phonon branches.
引用
收藏
页码：367 / 371
页数：5
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