Far-infrared magnetospectroscopy on epitaxial zero-gap and wide-gap semiconductor layer systems |
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| Authors: | P Kempf M von Ortenberg R Bicknell-Tassius and A Waag |
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| Institution: | (1) Institut für Halbleiterphysik und Optik & Hochmagnetfeldanlage der Technischen Universität Braunschweig, Mendelssohnstr. 3, W-3300 Braunschweig, Germany;(2) Physikalisches Institut der Universität Würzburg, Am Hubland, W-8700 Würzburg, Germany |
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| 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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