Magneto-optical absorption in Pöschl–Teller-like quantum well

Abstract

We study the magneto-optical properties of a Pöschl–Teller-like quantum well made of different materials such as GaAs, GaSb, InAs, and InSb. The energy difference becomes smaller with the wider well-width and becomes bigger with the deeper well-depth. The energy difference appears smallest in GaAs, followed by that in GaSb, while InSb shows the largest. The magneto-optical absorption coefficient (MOAC) shifts to the lower (higher) energy side when the well-width (well-depth and magnetic field) increases, but does not change the position with the change of temperature. The full-width at half-maximum (FWHM) increases with the increase of the well-depth, the temperature, and the magnetic field but decreases with the well-width. The phonon-emission process always happens stronger than the absorption one. The MOAC intensity in GaAs is the highest. The temperature-dependent-FWHM is supported by experimental results in GaAs quantum well.