Magnetoabsorption spectra of magnetoexciton transitions in GaAs/Ga0.7Al0.3As quantum wells

The internal transitions and absorption spectra of confined magnetoexcitons in GaAs/GaAlAs quantumwells have been theoretically investigated under magnetic fields along the growth direction of thesemiconductor heterostructure.The magnetoexciton states are obtained within the effective-mass approximationby using a variational procedure.The trial exciton-envelope wavefunctions are described ashydrogeniclike polynomial functions.The internal transition energies are investigated by studying theallowed magnetoexcitonic transitions using terahertz radiation circularly polarized in the plane of thequantum well.The intraexcitonic magnetoabsorption coefficients are obtained for transitions from 1s-liketo 2p~±-like magnetoexciton states as functions of the applied magnetic field.