Programme

P.27 -- Poster, VCTP-46

Date: Tuesday, 5 October 2021

Time: 08:30 - 10:00

Calculation of the acoustomagnetoelectric field in a doped semiconductor superlattice under the influnce of an intense electromagnetic wave

Hoàng Văn Ngọc, Nguyễn Quyết Thắng, Nguyễn Văn Nghĩa, Nguyễn Quang Báu.

Department of Theoretical Physics, Faculty of Physics, VNU University of Science.

The acoustomagnetoelectric (AME) effect has been studied theoretically in a doped semiconductor superlattice (DSS) in the presence of a magnetic field, a constant dc electric field and under the influence of an intense electromagnetic wave (EMW). An analytic expression of the AME field induced by electron-external acoustic wave interaction and electron-internal acoustic phonon (internal acoustic wave) scattering is calculated by using the quantum kinetic equation for electrons. Numerical evaluation for the specific GaAs:Si/GaAs:Be DSS indicates the dependence of the AME field on the temperature T of the system, on the frequency of the external acoustic wave, on the magnetic field B and the characteristic parameter of DSS. Numerical results are compared with those for the bulk semiconductors systems to show the originality of the AME field in DSS. The results obtained are newness and play a crucial part in quantum theory of acoustomagnetoelectric effect in low-dimensional systems.

Presenter: Nguyễn Quyết Thắng