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在外电场作用下有限抛物量子阱中类氢杂质态结合能 被引量：1

Binding Energy of a Hydrogenic Impurity in a Finite Parabolic Quantum Well Under an External Electric Field
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摘要 采用变分方法研究GaAs/AlxGa1-xAs有限抛物量子阱中类氢杂质态能量和结合能随外电场和阱宽的变化关系.在计算中考虑了电子有效带质量和介电常数随空间坐标(或合金组分)的变化因素.结果表明,外电场对类氢杂质态能量和结合能均有明显的影响,并且这些影响随着阱宽的增大而增大.电子有效带质量和介电常数随空间坐标的变化效应使得类氢杂质态基态能量减小,结合能增大,此效应随着阱宽的增大明显变小. The ground state and binding energy of a hydrogenic impurity as functions of the electric field and well width in a GaAs/AIxGa1-xAs PQW are investigated with the variational method. The effects of spatial dependent effective mass and spatial dependent dielectric constant are considered in the calculation. The results indicate that the effects of the external electric field on the ground state and binding energy of the hydrogenic impurity are noticeable,and they increase with increasing well width. The effects of the spatial dependent effective mass and spatial dependent dielectric constant make the ground state energy decrease and the binding energy increase. These effects decrease with increasing well width.
作者 赵凤岐 萨茹拉
机构地区 内蒙古师范大学物理与电子信息学院
出处 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2006年第5期830-833,共4页 半导体学报（英文版）
基金 国家自然科学基金资助项目(批准号:10364003)~~
关键词 抛物量子阱 类氢杂质态 外电场 结合能 parabolic quantum well hydrogenic impurity external electric field binding energy
分类号 O471.1 [理学—半导体物理] O571.2 [理学—粒子物理与原子核物理]
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参考文献25

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共引文献1

同被引文献28

  • 1苏亚拉,肖景林.抛物量子线中束缚磁极化子的性质[J].发光学报,2006,27(3):296-302. 被引量：5
  • 2萨茹拉,关玉琴.在磁场作用下氮化物抛物量子阱中杂质态能量[J].光电子．激光,2006,17(7):891-894. 被引量：6
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Journal of Semiconductors
2006年 第5期

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