| 量子点中双极化子稳定性的研究 |
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| 引用本文： | 陈庆虎,阮永红. 量子点中双极化子稳定性的研究[J]. 安徽师范大学学报(自然科学版), 2005, 28(1): 1-4 |
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| 作者姓名： | 陈庆虎 阮永红 |
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| 作者单位： | 浙江大学,物理系,浙江,杭州,310027;浙江大学,物理系,浙江,杭州,310027 |
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| 基金项目： | 国家自然科学基金 , 浙江省自然科学基金 |
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| 摘 要： | 基于Lee-Low-Pines-Huybrechts变分理论推导出计算量子点中双极化子的基态能表达式.该理论方法适应于整个电子-声子耦合区域.通过数值计算和理论分析,讨论了量子点中双极化子的存在条件与约束势的关系,发现量子点约束势的加强不利于双极化子的稳定.
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| 关 键 词： | 双极化子 基态能 量子点约束势 |
| 文章编号： | 1001-2443(2005)01-0001-04 |
| 修稿时间： | 2004-12-15 |
THE STUDY ON STABILITY OF BIPOLARIONS IN QUANTUM DOTS |
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| CHEN Qing-hu,RUAN Yong-Hong. THE STUDY ON STABILITY OF BIPOLARIONS IN QUANTUM DOTS[J]. Journal of Anhui Normal University(Natural Science Edition), 2005, 28(1): 1-4 |
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| Authors: | CHEN Qing-hu RUAN Yong-Hong |
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| Abstract: | Based on Lee-Low-Pines-Huybrechts variational theory, the formula for the calculation of the ground-state energy of bipolarons in quantum dots is derived, which is suited for the whole electron-phonon coupling regime. The relationship between the stability of bipolarons and the confining potential is discussed both mumerically and analytically. It is find the increase of the confining potential does not favor the stability of bipolarons. |
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| Keywords: | bipolaron ground-state energy quantum confining potential |
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