| 磁场内双声子作用对量子点中极化子的影响 |
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| 引用本文： | 刘延春,李子军.磁场内双声子作用对量子点中极化子的影响[J].微纳电子技术,2008,45(10). |
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| 作者姓名： | 刘延春 李子军 |
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| 作者单位： | 烟台大学,光电信息学院,山东,烟台,264005 |
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| 摘 要： | 为突出双声子相互作用对磁场内量子点中极化子的影响,简化了理论模型,把库仑势对电子质量的影响用电子在能带中的质量来代替。使用线性组合算符和么正变换对系统进行理论计算,导出了半导体量子点中磁极化子的基态和各部分能量。当考虑电子在反冲效应中反射和吸收不同波矢的声子之间相互作用时,讨论了这种作用对半导体量子点中磁极化子基态能量的影响。通过数值计算表明,半导体量子点中磁极化子的基态能量随量子点的有效受限长度的减小而迅速增大,随磁场的增加而增加。当磁场较弱时,声子之间的相互作用对极化子性质的影响是不能忽略的。
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| 关 键 词： | 声子相互作用 半导体量子点 磁场 基态能量 极化子性质 |
Influence of Double-Phonon in Magnetic Field on Polarons in Quantum Dots |
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| Liu Yanchun,Li Zijun.Influence of Double-Phonon in Magnetic Field on Polarons in Quantum Dots[J].Micronanoelectronic Technology,2008,45(10). |
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| Authors: | Liu Yanchun Li Zijun |
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| Affiliation: | Liu Yanchun,Li Zijun(Institute of Science , Technology for Optoelectronic Information,Yantai University,Yantai 264005,China) |
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| Abstract: | For emphasizing the influence of interaction between phonons on polarons in quantum dots in the magnetic field,the theoretics model were predigested,and the influence of potential on the electron mass was replaced by the electron mass in energy band.The ground state energy and other part energies of magnetopolarons in semiconductor quantum dots were derived by using linera combination operator and perturbation method.Considering the interaction of electrons as launching and absorbing phonons with different ... |
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| Keywords: | interaction between phonons semiconductor quantum dots magnetic field ground state energy quality of the polarons |
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