Programme

P.21 -- Poster, VCTP-48

Date: Tuesday, 1 August 2023

Time: 08:30 - 10:00

Influence of confined acoustic phonons on the acousto-electric field in doped semiconductor superlattices.

Nguyen Van Nghia (1), Nguyen Quyet Thang (2), Nguyen Quang Bau (2). Đơn vị trực thuộc: (1) Đại học Thủy Lợi; (2) Đại học Khoa học tự nhiên - ĐH Quốc gia Hà Nội.

qthang52@gmail.com

By using a quantum kinetic equation for eletron, the expression of the acousto-electric field under the influence of confined acoustic phonoons in doped semiconductor superlattices(DSSL) is obtained. From these expression, the acousto-electric field depend on temperature , acoustic wave frequency , Fermi energy level , doped concentration and quantum number m characterizing the phonons confinement. The rerults are numerically calculated for the GaAs:Be/GaAs:Si DSSL and its have showed that the appearance of phonons confinement makes the acousto-electric field value become difirent than the cases of unconfined phonons.

Presenter: Nguyễn Quyết Thắng