Work

Effects of magnetic and electric fields on optical characteristics in doped Anharmonic GaAs quantum wells

Year: 2025

Type: article

Abstract: In this work, we investigate the energy spectrum of confined electrons in a doped structure based on an octic anharmonic confining potential. The numerical analysis is conducted within the parabolic and effective mass approximations, considering the effects of external fields. Initially, we determine and analyze the lowest energy levels and their associated probability distributions. This electronic analysis is performed through a self-consistent resolution of three coupled equations: the Schrödinger, neutrality, and Poisson equations. To compute the total optical absorption coefficients (TOACs), we evaluate the key factors influencing optical transitions, including dipole matrix elements, energy separations, and the occupancy ratio. A comprehensive discussion is provided on the impact of doping concentration and external fields on TOAC shifts. The results reveal that adjusting the doping concentration is the most effective strategy for inducing significant changes in energy levels, surpassing the effects of electric and magnetic fields. Moreover, this approach enables both red and blue shifts in TOACs, making it highly advantageous for technological applications.

Source: Results in Engineering

DOI: 10.1016/j.rineng.2025.107424

Authors: M.O. Musa, H. Dakhlaoui

Institutions: Gulf University for Science & Technology, Imam Abdulrahman Bin Faisal University

Language: English

Topic: Semiconductor Quantum Structures and Devices

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,940

Funders: Gulf University for Science and Technology, Kuwait Foundation for the Advancement of Sciences