Programme

O.4 -- Oral, NCTP-39

Date: Monday, 28-07-2014

Time: 14h20 - 14h40

Phonon – assisted cyclotron resonance in quantum well with semi – inverse potential via two – photon absorption process

Le Dinh (1), Luong Van Tung and Pham Tuan Vinh (2)

(1) Department of Physics and Center for Theoretical and Computational Physics, Hue University’s College of Education, Hue, Viet Nam. (2) Department of Physics, Dong Thap University, Dong Thap, Viet Nam.

Phonon – assisted cyclotron resonance (PACR) in the semi – inverse potential quantum well is investigated via two – photon absorption process when electrons are scattered by LO – phonon. Using the Green’s function method, we obtain the expression of absorption power in the case of one and two – photon absorption. The dependence of absorption power on frequency with different values of temperature, magnetic field and well width is indicated. Besides, we obtain PACR – linewith as profiles of the curves by using profile method. The temperature and magnetic field dependence of the PACR – linewidth is investigated. The results are compared those in the quantum well models with different types of confined potentials.

Presenter: Phạm Tuấn Vinh