The effect of hydrostatic pressure on subband structure and optical transitions in modulation-doped quantum well


Ungan F. , Yesilgul U., Sakiroglu S., Kasapoglu E. , Sari H. , Sokmen I.

SUPERLATTICES AND MICROSTRUCTURES, cilt.49, ss.635-643, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 49 Konu: 6
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.spmi.2011.04.001
  • Dergi Adı: SUPERLATTICES AND MICROSTRUCTURES
  • Sayfa Sayıları: ss.635-643

Özet

Within the framework of effective-mass approximation, we have calculated theoretically the effects of hydrostatic pressure and doping concentration on subband structure and optical transitions in modulation-doped GaAs/Al(x)Ga(1-x)As quantum well for different well widths. The electronic structure of modulation-doped quantum well under the hydrostatic pressure is determined by solving the Schrodinger and Poisson equations self-consistently. The results obtained show that intersubband transitions and the subband energy levels in the modulation-doped quantum well can be significantly modified and controlled by the well width, donor concentration and hydrostatic pressure. (C) 2011 Elsevier Ltd. All rights reserved.