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Electric and magnetic field effects on the self-polarization in GaAs/AlAs cylindrical quantum well-wires
(Elsevier Science Bv, 2006) Erdogan, I; Akankan, O; Akbas, H
In this work we have calculated the effect of the infinite cylindrical quantum well-wire barrier on the donor electron within a variational scheme. The binding energy and the self-polarization effect are calculated for different location of impurity ion as function of both electric and magnetic fields. We find that, self-polarization effect depends strongly on the applied magnetic field. (c) 2006 Published by Elsevier B.V.
Spatial electric field effect in GaAs-AlAs quantum wires
(Elsevier Science Bv, 2005) Akankan, O; Okan, SE; Akbas, H
The response of an electron to a three-dimensional electric field in an infinite quantum well wire of square cross-section is investigated within a variational scheme. The ionization energy and the polarization are calculated for different locations of impurity ion. It is found that the results for the spatial electric field differ from the previous results found for the electric field applied in the direction perpendicular to the wire axis. The ionization energy weakens rapidly with the axial component of the field as the polarization of the carrier distribution intensifies. (C) 2004 Elsevier B.V. All rights reserved.