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

Autor: Li Shu-Shen, Lü Yan-Wu, Wang Jun, Liu Xiang-Lin, Yang Shao-Yan, Zhu Qin-Sheng, Wang Zhan-Guo
Jazyk: angličtina
Rok vydání: 2009
Předmět:
Zdroj: Nanoscale Research Letters, Vol 4, Iss 11, Pp 1315-1318 (2009)
Druh dokumentu: article
ISSN: 1931-7573
1556-276X
DOI: 10.1007/s11671-009-9398-3
Popis: Abstract 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 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.
Databáze: Directory of Open Access Journals
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