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Journal of Physical Studies 4(4), 448–453 (2000)
DOI: https://doi.org/10.30970/jps.04.448
PECULIARITIES OF THE
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The band structure of the [100] (CdTe)$_{m}/$(Cd$_{1-x}$Mn$_{x}$Te)$_{n}$ superlattices is calculated theoretically depending on the semiconductor CdTe and Cd$_{1-x}$Mn$_{x}$Te layers width and magnetic component concentration. Calculations are carried out within semiempirical tight-binding method, which includes $s$-, $p$-orbitals of each atom and cation $d$-orbitals. The Mn $3d$-states contribution to the formation of the superlattice energy spectrum is analyzed and compared with the corresponding contribution in the case of bulk Cd$_{1-x}$Mn$_{x}$Te. It is shown that a superlattice on the base of the diluted magnetic semiconductor Cd$_{1-x}$Mn$_{x}$Te with a small width of CdTe layers is a semiconductor material with the similar magnetic properties but with a more complicated dependence of the crystal forbidden band gap on the magnetic component concentration. The results of band structure calculations are used for explaining the experimental photoluminescence spectrum of a superlattice based on Cd$_{1-x}$Mn$_{x}$Te.
PACS number(s): 73.20.Dx, 78.66.Hf