Binding energy of impurity states in an inverse parabolic quantum well under magnetic field


Kasapoglu E. , Sari H. , Sokmen I.

PHYSICA B-CONDENSED MATTER, cilt.390, ss.216-219, 2007 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 390
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.physb.2006.08.016
  • Dergi Adı: PHYSICA B-CONDENSED MATTER
  • Sayfa Sayıları: ss.216-219

Özet

We have investigated the effects of the magnetic field which is directed perpendicular to the well on the binding energy of the hydrogenic impurities in an inverse parabolic quantum well (IPQW) with different widths as well as different Al concentrations at the well center. The Al concentration at the barriers was always x(max) = 0.3. The calculations were performed within the effective mass approximation, using a variational method. We observe that IPQW structure turns into parabolic quantum well with the inversion effect of the magnetic field and donor impurity binding energy in IPQW strongly depends on the magnetic field, Al concentration at the well center and well dimensions. (c) 2006 Elsevier B.V. All rights reserved.