Abstract
AbstractWe present far‐infrared (FIR) reflection studies for Zn1–x Mnx Se. It is found that a modified oscillator model provides improved agreement with the experimental data. Our results suggest an intermediate‐mode behavior for the optical phonon modes in Zn1–x Mnx Se. In addition to the known ZnSe‐like and MnSe‐like phonon resonances a weak defect‐related feature ‘D’ is found below the MnSe‐like phonon band. The frequency of this feature shows a temperature and Mn dependent red‐shift. Furthermore, the observation of a drastic reduction in the free‐electron concentration with increasing Mn content suggests a compensation effect related to the formation of Mn‐related defect complexes. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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