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-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 390
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.physb.2006.08.016
  • Dergi Adı: PHYSICA B-CONDENSED MATTER
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.216-219
  • Anahtar Kelimeler: inverse parabolic quantum well, impurity binding energy, SHALLOW DONOR IMPURITIES, APPLIED ELECTRIC-FIELD, EXCITONS, LASER
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

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.