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

In the framework of effective-mass envelope function theory, including the effect of Rashba spin-orbit coupling, the binding energyE(b)and 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...

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Detalles Bibliográficos
Autores principales: Wang, Jun, Li, Shu-Shen, Lü, Yan-Wu, Liu, Xiang-Lin, Yang, Shao-Yan, Zhu, Qin-Sheng, Wang, Zhan-Guo
Formato: Texto
Lenguaje:English
Publicado: Springer 2009
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2894365/
https://www.ncbi.nlm.nih.gov/pubmed/20628470
http://dx.doi.org/10.1007/s11671-009-9398-3
Descripción
Sumario:In the framework of effective-mass envelope function theory, including the effect of Rashba spin-orbit coupling, the binding energyE(b)and 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 [Image: see text]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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