The g-factor of CuGaSe2 studied by circularly polarised magneto-reflectance

Yakushev, M V and Sulimov, M A and Faugeras, C and Mudryi, A V and Martin, R W (2020) The g-factor of CuGaSe2 studied by circularly polarised magneto-reflectance. Journal of Physics D: Applied Physics, 53 (17). 17LT02. ISSN 1361-6463 (https://doi.org/10.1088/1361-6463/ab6f1a)

[thumbnail of Yakushev-etal-JPD-2020-The-g-factor-of-CuGaSe2-studied-by-circularly-polarised-magneto-reflectance]
Preview
 Text. Filename: Yakushev_etal_JPD_2020_The_g_factor_of_CuGaSe2_studied_by_circularly_polarised_magneto_reflectance.pdf
Accepted Author Manuscript
License: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 logo
Download (602kB)| Preview

Abstract

High structural quality single crystals of CuGaSe2 were studied using photoluminescence (PL), optical reflectivity (OR) and circularly polarised magneto-reflectance (MR) at 4.2K in magnetic fields B up to 14 T. At B = 0 T both the PL and OR spectra exhibited the A free exciton, associated with the uppermost sub-band of the valence band of CuGaSe2 split by the tetragonal distortion in the lattice. The magnetic field induced a blue shift of the exciton in the MR spectra. Analysis of the dependence of the spectral position of the A exciton on B in the MR spectra, measured for both right and left circular polarisations of light, enabled the magnitude of its effective g-factor to be determined |g| = 0.46.

ORCID iDs

Yakushev, M V, Sulimov, M A, Faugeras, C, Mudryi, A V and Martin, R W ORCID logoORCID: https://orcid.org/0000-0002-6119-764X;
CORE (COnnecting REpositories)