Abstract
The exchange splitting of the free-exciton state in Te (x<0.5) is studied by magnetoreflectance experiments carried out up to 6.5 T, for σ and π light polarization. Magnetization measurements made up to 15 T determine the mean value of the spins along the magnetic field. Comparison of magneto-optical with magnetic data, obtained for the same samples, at 1.86 K, in the paramagnetic region (x≤0.17) shows an excellent agreement with the simple exchange interaction model and yields precise values of exchange integrals of ions with conduction and valence electrons (-0.18 and 1.05 eV respectively). Fits of the magnetization data are also described.
- Received 13 May 1985
DOI:https://doi.org/10.1103/PhysRevB.32.5144
©1985 American Physical Society