Open AccessMagneto-optical absorption coefficients in monolayer MoSe2
Author(s) -
Tran N. Bich,
Huynh V. Phuc,
Lê Đình
Publication year - 2021
Publication title -
tạp chí khoa học đại học huế: khoa học tự nhiên/tạp chí khoa học đại học huế: khoa học tự nhiên (online)
Language(s) - English
Resource type - Journals
eISSN - 2615-9678
pISSN - 1859-1388
DOI - 10.26459/hueunijns.v130i1b.6162
Subject(s) - zeeman effect , monolayer , materials science , spin–orbit interaction , magnetic field , condensed matter physics , absorption (acoustics) , coupling (piping) , spectral line , blueshift , absorption spectroscopy , terahertz radiation , spin (aerodynamics) , molecular physics , optics , optoelectronics , chemistry , physics , photoluminescence , nanotechnology , quantum mechanics , astronomy , metallurgy , composite material , thermodynamics
We study the linear, third-order nonlinear, and total absorption coefficients (OACs) caused by intra- and inter-band transitions in monolayer MoSe2 in the presence of a magnetic field by using the compact density matrix approach. The results show that the OACs display the blue-shift behaviour with an increase in the magnetic field. The Zeeman fields do not affect the peak positions but reduce peak intensities slightly. Besides, the strong spin-orbit coupling in monolayer MoSe2 causes the peaks to differ significantly due to spin-up and spin-down. The OACs due to intra-band transition display only one peak in the THz range, while the inter-band spectra show a series of peaks in the near-infrared optical range, making monolayer MoSe2 a promising candidate for novel optoelectronic applications.