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8 April 1999 Peculiarities of the electron transport in ZnxCdyHg1-x-yTe
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Abstract
Transport phenomena such as conductivity, Hall effect and Magnetophonon Resonance (MPR) are studied in quaternary solid solutions ZnxCdyHg1-x-yTe. The three-mode phonon spectrum as well as the presence of ZnTe- and HgTe-clusters deducible from Raman spectra have been confirmed by MPR-data. The comparison of the dependence of Eg(T) obtained by temperature shift of the MPR peaks with one calculated by means of empirical formulae for the energy gap dependences on the component concentration and temperature is performed. The discrepancies between experimental and calculated data are probably caused by the difference in the concentration of components within those regions where the electron transport occurs and the averaged compound concentration measured by X-ray micro analysis (the space resolution for those measurements exceeds 1 micrometers ). Unbounded HgTe- and ZnTe-clusters are formed due to the escape of Hg- and Zn-atoms out of this region. It can be suggested that the electron transport occurs in a part of the crystal where a stochastically homogeneous distribution of cation atoms takes place.
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J. Cebulski, T. Kakol, Eugen M. Sheregii, and P. G. Sydorchuk "Peculiarities of the electron transport in ZnxCdyHg1-x-yTe", Proc. SPIE 3725, International Conference on Solid State Crystals '98: Epilayers and Heterostructures in Optoelectronics and Semiconductor Technology, (8 April 1999); https://doi.org/10.1117/12.344730
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