| 量子棒中极化子声子平均数的温度依赖性 |
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| 引用本文： | 乌云其木格,王晓昱,额尔敦朝鲁.量子棒中极化子声子平均数的温度依赖性[J].固体电子学研究与进展,2010,30(2). |
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| 作者姓名： | 乌云其木格 王晓昱 额尔敦朝鲁 |
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| 作者单位： | 1. 内蒙古民族大学物理与电子信息学院,内蒙古,通辽,028043
2. 河北科技师范学院凝聚态物理研究所,河北,秦皇岛,066004 |
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| 基金项目： | 半导体超品格国家重点实验室开放研究课题，河北省自然科学基金资助项目 |
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| 摘 要： | 采用Huybrechts线性组合算符和Lee-Low-Pines变分法,研究了温度对量子棒中强耦合极化子平均声子数和振动频率的影响。结果表明,量子棒中强耦合极化子的平均声子数N-和振动频率λ随量子棒纵横比e′、温度T的增加而减小,随电子-声子耦合强度α和受限强度Ω∥的增加而增大。温度对平均声子数N-和振动频率λ的影响只是在温度较高(γ<1.0)时较显著,而在温度较低(γ>1.0)下并不显著。
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| 关 键 词： | 量子棒 强耦合极化子 平均声子数 振动频率 温度依赖性 |
Temperature Dependence of the Mean Phonon Number of the Polaron in a Quantum Rod |
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| Wuyunqimuge,WANG Xiaoyu,Eerdunchaolu.Temperature Dependence of the Mean Phonon Number of the Polaron in a Quantum Rod[J].Research & Progress of Solid State Electronics,2010,30(2). |
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| Authors: | Wuyunqimuge WANG Xiaoyu Eerdunchaolu |
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| Abstract: | The temperature influences on the mean phonon number and the vibration frequency of the strong-coupling polaron in a quantum rod are studied by using the Huybrechts' linear combination operator and the Lee-Low-Pines variational method in this paper.Our results show that the mean number and the vibration frequency λ decrease with increasing the aspect ratio e′ and temperature T and inecrease with increasing coupling strength α and the confinement strength Ω∥.Only on the condition of high temperature(γ<1.0),the temperature influence on the mean phonon number and the vibration frequency λ of the strong-coupling polaron is obvious,but this is not so when γ>1.0. |
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| Keywords: | quantum rod strong-coupling polaron mean phonon number vibration frequency temperature dependence |
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