Programme

P.51 -- Poster, VCTP-45

Date: Tuesday, 13 October 2020

Time: 08:30 - 10:00

Effect of electron-impurity scattering on the magneto-optical absorption property in MoS$_2$ monolayer

Le Thi Thu Phuong (1), Bui Dinh Hoi (1), Tran Cong Phong (2)

(1) Department of Physics, University of Education, Hue University, Hue City, Viet Nam; (2) The Vietnam National Institute of Educational Sciences, Hanoi, Viet Nam

In this work, we investigate the absorption of an electromagnetic wave in a MoS$_2$ monolayer subjected to a perpendicular static magnetic field. The absorption coefficient is calculated by the perturbation taking account of the electron-impurity scattering. The absorption spectrum shows the appearance of cyclotron-impurity resonant peaks for one and two photon absorption. The position of the resonant peaks (the resonant photon energy) is proportional to the square root of the magnetic field strength ($\sqrt {B}$), while it does not affect by the temperature. In addition, the full width at half maximum of the resonant peaks increases linearly with the magnetic field but almost does not change with temperature. The contribution of two-photon absorption processes is much smaller than that of one-photon absorption ones but is significant and should be considered when studying nonlinear optics.

Presenter: Le Thi Thu Phuong

Presentation file: