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GaAs量子环中类氢杂质能量的研究
  • 期刊名称：广东教育学院学报
  • 时间：0
  • 页码：51-56
  • 语言：中文
  • 分类：O562.1[理学—原子与分子物理;理学—物理]
  • 作者机构：[1]广东第二师范学院物理系,广东广州510303
  • 相关基金：国家自然科学基金资助项目（10874122）; 广东省自然科学基金资助项目（8151030301）; 广东第二师范学院教授博士专项经费资助项目
  • 相关项目：少电子纳米耦合体系的外界因素效应及其应用研究
作者： 惠萍|
关键词： B样条技术, 量子环, 类氢杂质, B-spline technique, quantum ring, Hydrogenlike impurity
中文摘要：

利用B样条技术研究GaAs量子环中类氢杂质能量的量子尺寸效应.对计算结果比较看到：无磁场情况,对于｜m｜=0,r0〈75 nm,抛物禁闭关联势可以近似作为微扰项来处理;对于｜m｜≥0,r0〈60 nm,不可以采用微扰法.当r0〉90 nm时,库仑势可以近似作为微扰项来处理,但误差很大.当磁场B增加时,类氢杂质能量的量子尺寸效应出现明显变化,当r0〉90 nm时,量子环中类氢杂质能量快速上升.

英文摘要：

Hydrogenlike impurity energy size-dependent effect in GaAs quantum ring is studied by B-spline technique.The calculated results show that in the zero magnetic field,when ｜m｜=0 and r075 nm,parabolic potential across item can be taken as perturbation.When ｜m｜≥1 and r060 nm,the perturbation method cannot be used.Whenr090 nm,the Coulomd potential can be taken as perturbation,but the error is large.As magnetic field strength B increases,Hydrogenlike impurity energy size-dependent effect in GaAs quantum ring changes violently.When r090 nm,the energy increases quickly as quantum ring radius r0 increases.

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少电子纳米耦合体系的外界因素效应及其应用研究
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