Eur. Phys. J. B 69, 237-244 (2009)
https://doi.org/10.1140/epjb/e2009-00138-y

Binding energy of hydrogenic impurity states in an inverse parabolic quantum well under static external fields

¹ Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
² Department of Materials Science, School of Natural Sciences, University of Patras, Rion, 26504, Greece
³ Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
⁴ Department of Physics, School of Natural Sciences, University of Patras, Rion, 26504, Greece

Corresponding author: ^a terzis@physics.upatras.gr

Received: 23 January 2009
Published online: 18 April 2009

Abstract

In the present theoretical study, we investigate the influence of external fields (electric and/or magnetic) on the binding energy of hydrogenic impurities in a GaAs/Ga_1-xAl_xAs inverse parabolic quantum well, in which the parabolicity depends on the Al concentrations at the well center. Our calculations have been based on the potential morphing method in the effective mass approximation. The systematic theoretical investigation contains results with all possible combinations of the involved parameters, as quantum well width, Al concentrations at the well center, position of the impurity and magnitudes of the external fields.