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Theoretical study of Magnetoresistance Oscillations in Semi-parabolic Plus Semi-inverse Squared Quantum Wells in the Presence of Intense Electromagnetic Waves by Huong, Nguyen Thu; Bau, Nguyen Quang; Ba, Cao Thi Vi; Dung, Bui Thi; Toan, Nguyen Cong; Tran, Anh-Tuan is a scholarly article available to read on EtoBox.

What is Theoretical study of Magnetoresistance Oscillations in Semi-parabolic Plus Semi-inverse Squared Quantum Wells in the Presence of Intense Electromagnetic Waves about?

Magnetoresistance oscillations in semiconductor quantum wells, with the semi-parabolic plus semi-inverse squared potential, under the influence of intense electromagnetic waves (IEMW), is studied theoretically. Analytical expression for the longitudinal magnetoresistance (LMR) is derived from the quantum kinetic equation for electrons, using the Fr\"ohlich Hamiltonian of the electron-acoustic phonon system. Numerical calculation results show the complex dependence of LMR on the parameters of the external field (electric, magnetic field and temperature) as well as the structure parameters of the confinement potential. In the absence of IMEW, Shubnikov-de Haas (SdH) oscillations appear with amplitudes that decrease with temperature in agreement with previous theoretical and experimental results. In the presence of IEMW, the SdH oscillations appear in beats with amplitudes that increase with the intensity of the IEMW. SdH oscillations under the influence of electromagnetic waves are called microwave-induced magnetoresistance oscillations. The maximum and minimum peaks appear at the positions where the IEMW frequencies are integer and half-integer values of the cyclotron frequency, res

Author

Huong, Nguyen Thu; Bau, Nguyen Quang; Ba, Cao Thi Vi; Dung, Bui Thi; Toan, Nguyen Cong; Tran, Anh-Tuan

Published

2024

Language

EN