Universality of the Empty-Lattice Approximation to Predict the Topology of Energy Spectra of High-Symmetry Crystals and Superlattices Based upon Them

M. Sznajdera, D.M. Berchaa, K.E. Glukhovb and I.V. Slipukhinab aInstitute of Physics, University of Rzeszów, Rejtana 16a, 35-310 Rzeszów, Poland bInstitute of Physics and Chemistry of Solid State, Uzhgorod National University, 54 Voloshin St., 88000 Uzhgorod, Ukraine

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Received: 17 06 2006;

Oh7, Td2 and Oh5 symmetry crystals were discussed to demonstrate universality of the empty-lattice approximation to obtain the topology and symmetry of the elementary energy bands creating the valence band of those crystals and to predict a localization of the maximum of valence electron density distribution in the unit cell. The elaborated concept of the elementary energy bands was applied to the (GaAs)5/(AlAs)5 superlattice and ordered solid solution Pb0.5Sn0.5S.

DOI: 10.12693/APhysPolA.110.369 PACS numbers: 71.20.Nr, 71.15.Mb, 71.20.Mq, 73.21.Cd, 61.50.Ah