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

被引：0
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作者：
Jun Wang
Shu-Shen Li
Yan-Wu Lü
Xiang-Lin Liu
Shao-Yan Yang
Qin-Sheng Zhu
Zhan-Guo Wang
机构：
[1] Chinese Academy of Sciences,Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors
[2] Chinese Academy of Sciences,State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductrors
[3] Beijing Jiaotong University,Department of Physics
来源：
Nanoscale Research Letters | / 4卷
关键词：
Binding energy; Spin-orbit splitting; Hydrogenic donor impurity; AlGaN/GaN;
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摘要：
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 [inline-graphic not available: see fulltext]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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