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

• Published in: Physica. B, Condensed matter Vol. 592; p. 412279
• Main Authors: Le, P.T.T., Vinh, Pham T., Tu, Le T.N., Phuc, Huynh V., Nguyen, Chuong V., Hieu, Nguyen N., Hoa, Le T.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-09-2020; Elsevier BV
• Subjects: Absorptivity; Condensed matter physics; Gallium antimonides; Indium antimonide; Intermetallic compounds; Magnetic fields; Magnetic properties; Magneto-optical properties; Optical properties; Pöschl–Teller-like quantum well; Quantum dots; Quantum wells; Temperature; Temperature dependence; Transport properties; Magneto-optical properties; Transport properties; Pöschl–Teller-like quantum well
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/j.physb.2020.412279

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.
•Magneto-optical absorption is studied in the Pöschl–Teller-like quantum well.•MOAC and FWHM are strongly affected by well-parameters, temperature, and magnetic field.•The results are evaluated for both phonons emission and absorption.•The dependence of FWHM on temperature is consistent with both theoretical and experimental results.