Faraday Effects Due to Excitons in Cd1-xMnxTe Films

The authors performed a theoretical investigation of the Faraday effect in Cd
1-x
Mn
x
Te epitaxial films prepared by the ionized-cluster beam deposition technique. Splitting energies and oscillator strengths of an exciton level are calculated by taking account of a nondegenerate second-order perturbation. The wavelength dispersion of the calculated Faraday rotation spectra is compared with experimental data for Cd
1-x
Mn
x
Te films. The results suggest that the Faraday rotation is closely related to the magneto-optical transitions to Zeeman splitting levels of excitons.