| 半导体束缚激子基态能的变尺度法 |
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| 引用本文： | 闫海青,唐晨,张皞,刘铭,张桂敏. 半导体束缚激子基态能的变尺度法[J]. 物理学报, 2004, 53(11): 3877-3881 |
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| 作者姓名： | 闫海青 唐晨 张皞 刘铭 张桂敏 |
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| 作者单位： | 天津大学应用物理系，天津 300072 |
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| 基金项目： | 天津大学985教育振兴计划基金和南开大学天津大学刘徽应用数学中心 资助的课题. |
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| 摘 要： | 提出了计算体系基态能的变尺度法，用该算法计算了电子和空穴有效质 量比值不同时，离子化施主束缚激子（D+，X）的基态能. 在求解体系基态能上与传统的变分法相比有很大的优势，尤其适合复杂体系基态能的计算. 关键词：束缚激子氦原子基态能变尺度方法
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| 关 键 词： | 束缚激子 氦原子 基态能 变尺度方法 |
| 收稿时间： | 2004-01-09 |
The variable metric algorithm for ground state energy of ionized-donor-bound excitons in semiconductors |
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| Yan Hai-Qing,Tang Chen,Zhang Hao,Liu Ming,Zhang Gui-Min. The variable metric algorithm for ground state energy of ionized-donor-bound excitons in semiconductors[J]. Acta Physica Sinica, 2004, 53(11): 3877-3881 |
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| Authors: | Yan Hai-Qing Tang Chen Zhang Hao Liu Ming Zhang Gui-Min |
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| Abstract: | We present an optimization method, called the variable metric algorithm, to calc ulate the ground-state energies of excitons. The ground-state energ ies of two-dimensional ionized-donor-bound excitons(D＾+,X)have been calcu lated variationally for all values of effective electron-to-hole mass ratioб. They are compared with those obtained by the variational method. The results show that the proposed method is simple in software programming, acc urate, and has more advantages than the traditional variational method for the g round-state energies. The method is especially fitted for complex systems. |
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| Keywords: | bound excitons helium atom ground-st ate energy variable metric algorithm |
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