Acceptor 1s-2p(+/-) transitions in GaAs/Ga0.7Al0.3As quantum wells: Effects of spatially dependent screening under electric and magnetic fields


Akbas H., Aktas S., Okan S., Ulas M., Tomak M.

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, cilt.205, sa.2, ss.537-542, 1998 (SCI İndekslerine Giren Dergi) identifier

Özet

The valence subband energies in the presence of an electric-field are calculated using the fourth-order Runge-Kutta method. The 1s- and 2p(+/-)-like acceptor states in the presence of a magnetic field are then calculated variationally. The effects of the spatially dependent screening function epsilon(r) on the calculation of the transition energies are specifically investigated. The use of a constant epsilon(o) is shown to yield better agreement with experimental results.