极性晶体膜中强耦合激子的诱生势 |
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引用本文: | 杨洪涛,冀文慧,呼和满都拉.极性晶体膜中强耦合激子的诱生势[J].集宁师专学报,2014(2):108-111. |
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作者姓名: | 杨洪涛 冀文慧 呼和满都拉 |
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作者单位: | 集宁师范学院物理系,内蒙古乌兰察布012000 |
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基金项目: | 内蒙古自治区高等学校科学研究项目“极化子效应对低维结构材料中强耦合激子性质的影响”(项目编号:NJZY11287);内蒙古自治区高等学校科学研究项目“声子色散对低维结构中磁激化子性质的影响”(项目编号:NJZY12248) |
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摘 要: | 该文采用线性组合和LLP变分相结合的方法研究了极性晶体膜中强耦合激子的有效哈密顿量,得到了作为电子-空穴间距离和膜厚度函数的激子诱生势的表达式,进一步说明了考虑表面光学声子的必要性。
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关 键 词: | 激子 强耦合 诱生势 |
The Induced Potential of the Strong-Coupling Exciton in Polar Crystal Slabs |
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Institution: | YANG Hong-tao JI Wen-hui Huhemandula (Physics Department of Jining Normal University, Wulanehabu 012000, Inner Mongolia ) |
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Abstract: | In this paper,the effective Hamiltonian of the strong-coupling excitons in polar crystal slabs is studied by using a linear combination operator and the Lee-Low-Pines(LLP) variational method;the formula of the induced potential of the excitons is derived as the function of the relationship between the distance of the electronic holes and the thickness of the slabs; and further,the necessity of the consideration of surface optical phonons(SOP) is illustrated. |
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Keywords: | excitons strong-coupling induced potential |
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