PHYSICA B-CONDENSED MATTER, cilt.373, sa.2, ss.280-283, 2006 (SCI-Expanded)
The binding energy of the donor in the triple-graded GaAs-(Ga,Al)As quantum well under the hydrostatic pressure, electric and magnetic fields are calculated by using a variational approach. The results have been obtained in the presence of hydrostatic pressure, magnetic and electric fields applied along the growth direction as a function of the impurity position without consideration of a mass mismatch or dielectric mismatch. (c) 2005 Elsevier B.V. All rights reserved.