Binding energy and optical absorption of donor impurity states in "12-6" tuned GaAs/GaAlAs double quantum well under the external fields


Kasapoglu E. , Sakiroglu S., Sari H. , Sokmen I., Duque C. A.

PHYSICA B-CONDENSED MATTER, vol.554, pp.72-78, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 554
  • Publication Date: 2019
  • Doi Number: 10.1016/j.physb.2018.11.006
  • Title of Journal : PHYSICA B-CONDENSED MATTER
  • Page Numbers: pp.72-78

Abstract

We have investigated the binding energies of the s-symmetric ground and first excited shallow donor impurity states and the total 1s -> 2s absorption coefficient, including the first and third order corrections, in "12-6" tuned GaAs/GaAlAs double quantum well as a function of the impurity position, size of the structure, and the electric and magnetic field intensities. The obtained results show that the electronic and optical properties of tuned GaAs/GaAlAs double quantum well can be adjustable by an appropriate choice of the sample geometry, material parameters and applied external fields which will lead to new potential applications in optoelectronics.