Abstract
Far-infrared magnetotransmission measurements have been performed on MBE-grown HgTe and CdTe epilayers. The results on the HgTe samples can be understood by the standard Pidgeon-Brown model for bulk HgTe. For the CdTe layers, transitions were only observed under illumination by visible light. The spectra are dominated by the 1s→2p transition of the shallow hydrogen-like impurity. These transitions are persistent with a life time of the order of magnitude of one second.
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Kempf, P., von Ortenberg, M., Bicknell-Tassius, R. et al. Far-infrared magnetospectroscopy on epitaxial zero-gap and wide-gap semiconductor layer systems. Int J Infrared Milli Waves 13, 207–213 (1992). https://doi.org/10.1007/BF01010654
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DOI: https://doi.org/10.1007/BF01010654