DOI: https://doi.org/10.30970/jps.01.570
ENERGY SPECTRUM AND OPTICAL PROPERTIES OF THE SHORT-PERIOD GaAs/AlAs SUPERLATTICES
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Journal of Physical Studies 1(4), 570–576 (1997)
DOI: https://doi.org/10.30970/jps.01.570 ENERGY SPECTRUM AND OPTICAL PROPERTIES OF THE SHORT-PERIOD GaAs/AlAs SUPERLATTICES |
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S. Melnychuk, V. Studenets, I. Yuriychuk
Chernivtsi State University,
2 Kotsyubynskii Str., Chernivtsi, UA-274012, Ukraine
The energy spectrum and frequency dependence of the dielectric permittivity $ε_2(ω)$ for the GaAs and AlAs semiconductors have been calculated in the framework of the $sp^3s^*$ model. The same model is used for the calculating the of energy spectrum of the GaAs/AlAs superlattices with equal number of GaAs and AlAs layers. The contribution of the original materials to the superlattice spectrum formation and its variation with the number of superlattice layers have been analyzed. The energy band gap of these superlattices was compared with the experimental data and calculations of other authors. The peculiarities of $ε_2(ω)$ for the superlattices with a varying number of layers have been also investigated.