Binding Energy and Spin-Orbit Splitting of a Hydrogenic Donor Impurity in AlGaN/GaN Triangle-Shaped Potential Quantum Well.

Binding Energy and Spin-Orbit Splitting of a Hydrogenic Donor Impurity in AlGaN/GaN Triangle-Shaped Potential Quantum Well.
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AlGaN/GaN 三角形势量子阱中氢施主杂质的结合能和自旋轨道分裂

DOI:
10.1007/s11671-009-9398-3
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发表时间:
2009-11
影响因子:
--
通讯作者:
Wang ZG
Wang ZG
中科院分区:
材料科学3区
文献类型:
--
作者:
Wang J;Li SS;Lü YW;Liu XL;Yang SY;Zhu QS;Wang ZG

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在有效质量包络函数理论的框架下,考虑Rashba自旋轨道耦合的影响,计算了AlGaN/GaN三角形势异质界面中类氢施主杂质基态的结合能E带自旋轨道分裂能.我们发现,随着异质结电场的增加,(1)量子阱的有效宽度减小,(2)束缚能单调增加,(3)自旋轨道分裂能则急剧减小。(4)当异质界面电场为1 MV/cm时,最大吸收能量为1.22meV。
In the framework of effective-mass envelope function theory, including the effect of Rashba spin-orbit coupling, the binding energyEband spin-orbit split energy Г of the ground state of a hydrogenic donor impurity in AlGaN/GaN triangle-shaped potential heterointerface are calculated. We find that with the electric field of the heterojunction increasing, (1) the effective width of quantum well decreases and (2) the binding energy increases monotonously, and in the mean time, (3) the spin-orbit split energy Г decreases drastically. (4) The maximum of Г is 1.22 meV when the electric field of heterointerface is 1 MV/cm.
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影响因子: 3.7
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