Screening effect on polarizabilities of shallow donors and acceptors in finite‐barrier quantum wells

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Journal Title, Volume, Page: 
physica status solidi (b)
Year of Publication: 
Khaled Ilawi
Department of Science, Philadelphia University, Sweileh—Jordan
Current Affiliation: 
Associate Prof., Department of Physics, An-Najah National University ·
Preferred Abstract (Original): 

Polarizabilities of shallow donors and acceptors in finite-barrier GaAs/Ga1−xAlxAs quantum wells are calculated using Hasse's variational method within the effective mass approximation. The effect of spatially dependent screening on polarizabilities is taken into account with an r-dependent dielectric response. It is shown that spatially dependent screening effects can be more important for acceptors than for donors in GaAs/Ga1−xAlxAs quantum wells. The effects of electric and magnetic fields on binding energy are also studied.

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