Program

P.37 -- Poster, NCTP-40

Date: Tuesday, 28 July 2015

Time: 08h30 - 10h00

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

Vo Thanh Lam (1), Nguyen Dinh Hien (2), Tran Cong Phong (3)

(1) Department of Physics, Sai Gon University, 273 An Duong Vuong Str., District 5, Ho Chi Minh City, Viet Nam; (2) Hue University’s College of Education, 34 Le Loi Str., Hue City, Viet Nam; (3) Vietnam Institute of Educational Sciences, 101 Tran Hung Dao Str., District Hoan Kiem, Ha Noi, Viet Nam.

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

Presenter: Tran Cong Phong