Programme

P.3 -- Poster, NCTP-39

Date: Tuesday, 29-07-2014

Time: 10h30 - 12h00

Influence of phonon confinement on the optically-detected magneto-phonon resonance line-width in quantum wells

Tran Cong Phong (1,2), Le Thi Thu Phuong (2), Tran Dinh Hien (2), Vo Thanh Lam (3)

(1) National Education Union of Viet Nam, 02 Trinh Hoai Duc, Dong Da, Ha noi; (2) Center for Theoretical and Computational Physics, Hue University's College of Education, No. 34, Le Loi Str., Hue City, Viet Nam; (3) Department of Physics, Sai Gon University, 273 An Duong Vuong, District 5, Ho Chi Minh, Vietnam;

We investigate the influence of phonon confinement on the optically-detected magneto-phonon resonance (ODMPR) effect and ODMPR line-width quantum wells. The ODMPR conditions as functions of the well's width and the photon energy are also obtained. The shifts of ODEPR peaks caused by the confined phonon are discussed. The numerical result for the GaAs/AlAs quantum well shows that in the two cases of confined and bulk phonons, the line-width (LW) decreases with increasing well's width and increases with increasing temperature. Furthermore, in the small range of the well's width, the influence of phonon confinement plays an important role and cannot be neglected in reaching the ODMPR line-width.

Presenter: Tran Cong Phong