Local modes of substitutional transition metal ions in II–VI semiconductors

The 3d transition metal ions (TMI) substituting for the cations in the tetrahedrally coordinated zincblende II–VI semiconductors display a localized mode above the rest-strahlen when introduced in dilute concentrations. The local mode observed in the infrared exhibits a characteristic dependence on...

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Bibliographic Details
Published in:Solid state communications 1994-09, Vol.91 (10), p.785-789
Main Authors: Mayur, A.J., Sciacca, M.Dean, Miotkowski, I., Rocca, G.C.La, Ramdas, A.K., Rodriguez, S.
Format: Article
Language:English
Subjects:
A. semiconductors
C. impurities in semiconductors
D. phonons
E. light absorption and reflection
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Summary:The 3d transition metal ions (TMI) substituting for the cations in the tetrahedrally coordinated zincblende II–VI semiconductors display a localized mode above the rest-strahlen when introduced in dilute concentrations. The local mode observed in the infrared exhibits a characteristic dependence on the isotopic mass of the TMI. In the wurtzite II–VIs, the local mode undergoes a splitting into two components, one polarized along the optic axis and the other normal to it. The local mode frequency shows a striking non-monotonic dependence on the number of 3d electrons of the TMI.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(94)90648-3