Programme

P.38 -- Poster, VCTP-48

Date: Thursday, 3 August 2023

Time: 08:30 - 10:00

Optical Absorption Coefficient and Refractive-Index Change in Weyl semimetal thin films

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

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

We theoretically study the optical properties of thin films of Weyl semimetals (WSMs) in the presence of a non-uniform magnetic field. Analytical expressions for the optical absorption coefficients (OACs) and refractive index changes (RICs) are derived using the equation of motion method. The OACs and RICs are evaluated as a function of photon energy for both undoped and doped WSM thin films, considering different values of electron densities, temperatures, and magnetic fields. The electron density plays a significant role in determining the threshold energy in the doped regime. Furthermore, the contribution of right-polarized light to the susceptibilities is consistently dominant compared to the left-polarized light.

Presenter: Huynh V. Phuc