Condensed Matter Physics, 1996, No 8, p. 157-166, English
A new cluster expansion (CE) is proposed to calculate band structure and adiabatic potential of an insulator at high pressures. This kind of the CE is developed to permit using Lovdin orthogonalization of atomic orbitals for infinite crystals. The strong binding approach (LCAO method) and OPW one are modified. The technique suggested also fits for the crystals having impuirities, d-electrons, etc.Comments: Refs. 13, Tabs. 2, Figs. 0.
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