Abstract
AbstractCd1−x−yMnxFeyTe single crystals grown by the vertical Bridgman method have been studied by measuring the complex dielectric function using spectroscopic ellipsometry in the 1.5 ∼ 5.5 eV photon energy range at room temperature. The CP energy parameters of the E0, E1, E1 + Δ1, and E2 structures were determined by fitting the second‐derivative spectra (d2ε/dω2) with a theoretical model, i.e., the standard critical point (SCP) line shapes. The E1, E1 + Δ1, and E2 energies decreased with increasing Fe composition y, which is due to the hybridization effect of the valence and conduction bands in Cd1−xMnxTe with Fe 3d levels. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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