scholarly journals Geometrical and electro-magnetic field effects on the hydrogenic donor impurity energy structure in a non-uniform quantum ribbon

2018 ◽  
Author(s):  
Y. A. Suaza ◽  
D. Fonnegra ◽  
M. R. Fulla ◽  
J. H. Marín
Keyword(s):  
Magnetic Field ◽  
Energy Structure ◽  
Magnetic Field Effects ◽  
Donor Impurity ◽  
Field Effects ◽  
Electro Magnetic Field ◽  
Hydrogenic Donor Impurity ◽  
Hydrogenic Donor ◽  
Electro Magnetic ◽  
Uniform Quantum

Donor impurity states in a non-uniform quantum strip: Geometrical and electro-magnetic field effects

2017 ◽  
Vol 103 ◽  
pp. 127-138 ◽  
Author(s):  
Y.A. Suaza ◽  
D. Fonnegra-García ◽  
M.R. Fulla ◽  
J.D. Salazar-Santa ◽  
J.H. Marín
Keyword(s):  
Magnetic Field ◽  
Magnetic Field Effects ◽  
Donor Impurity ◽  
Impurity States ◽  
Field Effects ◽  
Electro Magnetic Field ◽  
Electro Magnetic ◽  
Uniform Quantum

Magnetic Field Effects on Electron Eigenstates in a Concentric Triple Quantum Ring

2010 ◽  
Vol 10 ◽  
pp. 121-130 ◽  
Author(s):  
Hojjatollah K. Salehani ◽  
Mahdi Esmaeilzadeh ◽  
Khosrow Shakouri
Keyword(s):  
Magnetic Field ◽  
Energy Levels ◽  
Quantum Ring ◽  
Dimensional System ◽  
Magnetic Field Effects ◽  
Donor Impurity ◽  
Quantum Rings ◽  
Hydrogenic Donor Impurity ◽  
Hydrogenic Donor ◽  
The Magnetic Field

In this paper, the electronic eigenstates and energy spectra of a two-dimensional system formed by three concentric, coupled, semiconductor quantum rings with a perpendicular magnetic field in the presence and the absence of a single ionized hydrogenic donor impurity are studied. It is found that the magnetic field localizes the electron wave function in the inner rings. The effects of hydrogenic donor on the electronic structure of concentric triple quantum rings are investigated in the both on- and off-center configurations. It is shown that as the donor moves away from the center of the system, the ground state energy decreases monotonically, the degeneracy is lifted and the gap between the energy levels increases. Also, the binding energy of donor impurity increases with increasing magnetic field.

Magnetic field effects on hydrogenic donor states in GaAs

1969 ◽  
Vol 7 (12) ◽  
pp. 883-886 ◽  
Author(s):  
R. Kaplan ◽  
M.A. Kinch ◽  
W.C. Scott
Keyword(s):  
Magnetic Field ◽  
Magnetic Field Effects ◽  
Field Effects ◽  
Hydrogenic Donor ◽  
Donor States

Magnetic Field Effect on the Binding Energy of a Hydrogenic Donor Impurity in Cylindrical Quantum Ring

2013 ◽  
Vol 380-384 ◽  
pp. 4841-4844 ◽  
Author(s):  
Guang Xin Wang ◽  
Xiu Zhi Duan
Keyword(s):  
Magnetic Field ◽  
Binding Energy ◽  
Magnetic Field Effect ◽  
Internal Surface ◽  
Outer Radius ◽  
Quantum Ring ◽  
Donor Impurity ◽  
Hydrogenic Donor Impurity ◽  
Inner Radius ◽  
Hydrogenic Donor

The binding energy of a hydrogenic donor impurity in cylindrical GaAs quantum ring (QR) subjected to an external magnetic field is calculated within the effect mass approximation using variational method. The binding energy as a function of the QR size (the inner radius, the outer radius), the impurity position and the applied magnetic field is investigated. The results demonstrate that the ground state binding energy behaves as an decreasing function of the outer radius, and the magnetic field. Likewise, the binding energy is an increasing function of the inner radius. The binding energy firstly increases and then decreases with shifting the impurity ion from the internal surface of the QR to the external surface, indicating that there is a maximum.

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