Hydrostatic Pressure and Built-In Electric Field Effects on the Donor Impurity States in Cylindrical Wurtzite GaNAlxGa1−xN Quantum Rings
Joint Authors
Wang, Guangxin
Duan, Xiuzhi
Zhou, Rui
Source
Advances in Condensed Matter Physics
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-02-19
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Within the framework of the effective mass approximation, the ground-state binding energy of a hydrogenic impurity is investigated in cylindrical wurtzite GaN/AlxGa1-xN strained quantum ring (QR) by means of a variational approach, considering the influence of the applied hydrostatic pressure along the QR growth direction and the strong built-in electric field (BEF) due to the piezoelectricity and spontaneous polarization.
Numerical results show that the donor binding energy for a central impurity increases inchmeal firstly as the QR radial thickness (ΔR) decreases gradually and then begins to drop quickly.
In addition, the donor binding energy is an increasing (a decreasing) function of the inner radius (height).
It is also found that the donor binding energy increases almost linearly with the increment of the applied hydrostatic pressure.
Moreover, we also found that impurity positions have an important influence on the donor binding energy.
The physical reasons have been analyzed in detail.
American Psychological Association (APA)
Wang, Guangxin& Duan, Xiuzhi& Zhou, Rui. 2015. Hydrostatic Pressure and Built-In Electric Field Effects on the Donor Impurity States in Cylindrical Wurtzite GaNAlxGa1−xN Quantum Rings. Advances in Condensed Matter Physics،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1052282
Modern Language Association (MLA)
Wang, Guangxin…[et al.]. Hydrostatic Pressure and Built-In Electric Field Effects on the Donor Impurity States in Cylindrical Wurtzite GaNAlxGa1−xN Quantum Rings. Advances in Condensed Matter Physics No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1052282
American Medical Association (AMA)
Wang, Guangxin& Duan, Xiuzhi& Zhou, Rui. Hydrostatic Pressure and Built-In Electric Field Effects on the Donor Impurity States in Cylindrical Wurtzite GaNAlxGa1−xN Quantum Rings. Advances in Condensed Matter Physics. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1052282
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052282