磁场对方形量子阱线中类氢杂质束缚能的影响  

Magnetic Field Effects on the Binding Energy of Hydrogentic Impurities in Square Cross-section Quantum-well Wires

作　　者：苏会[1] 刘建军[1] 

机构地区：[1]河北师范大学物理系,河北石家庄050016

出　　处：《河北师范大学学报（自然科学版）》2001年第1期42-45,共4页Journal of Hebei Normal University：Natural Science

基　　金：河北省教育厅自然科学基金资助项目!(2 0 0 10 4)

摘　　要：采用无限深势阱模型 ,利用变分法计算了磁场对截面为方形的一维量子阱线中类氢杂质基态束缚能的影响 ,同时还讨论了施主离子位置的变化对束缚能的影响 .计算结果表明外加磁场使得体系束缚能增加 ,杂质离子位于阱中心时 ,束缚能最大 ,位于正方形的某个角点时 。Using the variational approach,we study the role of the magnetic field on the binding energy of the ground states of a shallow impurity in a square cross section quantum well wire,where the magnetic field is applied parallel to the wire axis.The binding energy is found increased with the magnetic field strengthened.We also study the effects of the position of the impurity in the well on the binding energy of the ground states,and find that the binding energy is a maximum when the impurity is located on the axis of the wire and a minimum when the impurity on a corner of the square cross section.

关 键 词：磁场 量子阱线 束缚能 类轻杂质 离子位置 半导体量子结构 无限深势阱模型 

分 类 号：O471.1[理学—半导体物理]