Comparison of the magneto-optical properties of the semi-parabolic well with those of the parabolic and rectangular wells under the combined influences of aluminum concentration and hydrostatic pressure

• Published in: The Journal of physics and chemistry of solids Vol. 161; p. 110456
• Main Author: Hien, Nguyen Dinh
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.02.2022
• Subjects: Aluminum concentration; Confining potential shapes; FWHM; Hydrostatic pressure; Magneto-optical properties; Confining potential shapes; Aluminum concentration; Magneto-optical properties; Hydrostatic pressure; FWHM
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/j.jpcs.2021.110456

In this paper, we report the comparison of the magneto-optical transport properties of the semi-parabolic potential quantum well with those of the parabolic and rectangular potential quantum wells under the combined influences of the aluminum concentration, the temperature, the hydrostatic pressure, and the Landau levels by using the methods of the quantum field theory for many-particle systems in statistical physics and the profile to calculate analytically the conductivity tensor expression, the magneto-optical absorption power expression of the optically detected magneto-phonon resonance (ODMPR) oscillation, and the full width at half maximum (FWHM) of the ODMPR peak, respectively, in quantum wells with three above different confining potential shapes for typical GaAs/AlxGa1−xAs material. The results obtained from the present study show that (i) the ODMPR peak position undergoes a red-shift as the aluminum concentration and the hydrostatic pressure increase while it experiences a blue-shift as the temperature augments for all three above confining potential shapes; (ii) the FWHM as functions of the barrier's Al-concentration, the system's temperature, and the hydrostatic pressure for all three confining potential shapes is presented to compare; (iii) the dependence of the FWHM on the barrier's Al-concentration and the hydrostatic pressure for the Landau levels for three confining potential shapes also is taken into account in detail; (iv) our present theoretical calculations are found to be consistent with previous experimental calculations. •Magneto-optical properties of three potential wells under the influence of Al-concentration (x) and pressure (P) are compared.•The increase of x and P leads to a shift of the resonance peak position also is studied.•FWHM as a function of x and P for three potential wells is presented.•x and P dependence of the FWHM for the Landau levels of three potential wells is compared.•Theoretical calculations are consistent with previous experimental calculations.