| 抛物量子点中极化子的声子平均数 |
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| 引用本文： | 张鹏,丁朝华. 抛物量子点中极化子的声子平均数[J]. 内蒙古师范大学学报(自然科学版), 2006, 35(1): 54-57 |
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| 作者姓名： | 张鹏 丁朝华 |
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| 作者单位： | 中国石油大学(北京)数理系,北京,102249;内蒙古民族大学,物理系,内蒙古,通辽,028043 |
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| 基金项目： | 内蒙古高等学校科研项目;中国石油大学校科研和教改项目 |
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| 摘 要： | 采用幺正变换及线性组合算符法,导出抛物量子点中极化子的声子平均数,讨论了强、弱耦合的两种极限情况．结果表明,电子周围的声子平均数随着电子-声子耦合强度的增加而增大．
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| 关 键 词： | 量子点 声子平均数 耦合强度 线性组合算符 |
| 文章编号： | 1000-8735（2006）01-0054-04 |
| 收稿时间： | 2005-09-14 |
| 修稿时间： | 2005-09-14 |
The mean number of phonons of polaron in a parabolic quantum dot |
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| ZHANG Peng,DING Zhao-hua. The mean number of phonons of polaron in a parabolic quantum dot[J]. Journal of Inner Mongolia Normal University(Natural Science Edition), 2006, 35(1): 54-57 |
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| Authors: | ZHANG Peng DING Zhao-hua |
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| Affiliation: | 1. Department of Mathematic and Physics in the University of Petroleum ,Beijing 102249,China; 2. Department of Physics, Inner Mongolia National University, Tongliao 028043 ,China |
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| Abstract: | The mean number of phonons of a polaron in a parabolic quantum dot was derived by using the linear combination operator and the unitary transformation methods. The limiting cases were discussed for strong- coupling and weak coupling. The result illustrated that the mean number of phonons will increase with increasing the electron-phonons coupling strength. |
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| Keywords: | quantum dot mean number of phonons coupling strength linear combination operator |
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