| 自旋对非对称量子点中弱耦合束缚磁极化子基态能量的影响 |
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| 引用本文： | 汪晓武,肖娟,李建红,李志新.自旋对非对称量子点中弱耦合束缚磁极化子基态能量的影响[J].量子电子学报,2011,28(4):483-489. |
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| 作者姓名： | 汪晓武 肖娟 李建红 李志新 |
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| 作者单位： | 1 河北科技师范学院理化学院， 河北 秦皇岛 066004；
2 河北科技师范学院数学与信息科技学院, 河北 秦皇岛 066004 |
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| 基金项目： | The Doctorial Foundation of Hebei Normal University of Science and Technology(2008YB001) |
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| 摘 要： | 采用Tokuda修正的线性组合算符和幺正变换方法，研究了非对称量子点中弱耦合束缚磁极化子的性质。推导出了磁极化子基态能量随量子点横向、纵向受限长度和磁场的变化关系。进行了数值计算，计算结果表明：考虑自旋影响时，束缚磁极化子基态能量分裂成自旋向上（向下）两个分支。并且磁极化子基态能量、自旋向上（向下）分裂能随量子点横向、纵向受限长度的增加而减少，随磁场强度的增加而增大。
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| 关 键 词： | 光电子学 非对称量子点 自旋电子学 弱耦合 束缚磁极化子 |
| 收稿时间： | 2010-03-01 |
| 修稿时间： | 2010-06-23 |
Effect of spin on ground-state energy of weak-coupled bound magnetopolaron in asymmetry quantum dot |
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| WANG Xiao-wu,XIA O Juan,LI Jian-hong,LI Zhi-xin.Effect of spin on ground-state energy of weak-coupled bound magnetopolaron in asymmetry quantum dot[J].Chinese Journal of Quantum Electronics,2011,28(4):483-489. |
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| Authors: | WANG Xiao-wu XIA O Juan LI Jian-hong LI Zhi-xin |
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| Affiliation: | 1 College of Physics and Chemistry, Hebei Normal University of Science and Technology, Qinhuangdao 066004, China；
2 College of Mathematics and Information Technologe, Hebei Normal University of Science and Technology, Qinhuangdao 066004, China |
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| Abstract: | The properties of bound magnetopolaron,which is weakly coupled to LO-phonon in an asymmetric quantum dot(QD) were studied by using Tokuda modified linear combination operator and unitary transformation methods.The expression of ground-state energy as functions of the transverse and longitudinal confinement lengths and magnetic field was derived.After a simple numerical calculation,it's found that the ground-state energy of bound magnetopolaron splits into two branches after taking the spin influence into ac... |
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| Keywords: | optoelectronics asymmetric quantum dot spintronics weak-coupling bound magnetopolaron |
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