Programme

P.47 -- Poster, VCTP-49

Date: Friday, 2 August 2024

Time: 08:30 - 10:00

Magneto-optical absorption properties of monolayer transition metal dichalcogenides including electron-phonon interaction

Tran N. Bich (1,2), Le T. Hoa (3), Le Dinh (3), and Huynh V. Phuc (1)

(1) Dong Thap University; (2) Quang Binh University; (3) University of Education, Hue University

We study how the electron-phonon interaction (EPI) affects the reliance of the linear and non-linear magneto-optical absorption coefficients (MOACs) and refractive index changes (RICs) on the external electromagnetic field and electron spin orientation in monolayer MX$_2$ (M=Mo/W, X=S/Se) semiconductors. This work relies heavily on the density matrix method as its main research tool. The results show that the EPI effect reverses the variation of MOACs absorption peak intensity according to changes in the external fields and spin state of electron. This effect enhances the influence of the external field on RICs absorption peak intensity. We observe that control over the optical properties of MX$_2$ monolayers is achievable through adjustments in the external field value. This versatility is highly desirable for advanced materials.

Presenter: Trần Ngọc Bích