14 research outputs found
Nghiên cứu sự gia tăng phonon nhờ sự hấp thụ năng lượng của trường laser mạng bằng phương pháp phương trình động học
Ảnh hưởng của tương tác Electron-Electron lên sự kích thích Phonon trong siêu mạng bán dẫn
Optically detected magneto-phonon resonance linewidths in cylindrical quantum wire
In this paper, the general analytic expression for absorption power of a electromagnetic wave caused by confined electrons in cylindrical quantum wire (CQW) are obtained. Optically detected magneto-phonon resonance (ODMPR) effect in a specific GaAs/AlAs CQW is investigated. Anomalous behaviors of the ODMPR spectra are discussed. From the graphs showing the dependence of the absorption power on the photon frequency, we obtain ODMPR-linewidths as profiles of curves. Computational results show that the ODMPR-linewidths are directly proportional to magnetic field, temperature and decrease with wire's radius