Physics – Condensed Matter
Scientific paper
1998-03-31
Physics
Condensed Matter
15 Pages, RevTex, 3 postscript figures (included), to appear in the Journal of Chemical Physics, May 15, 1998
Scientific paper
10.1063/1.476281
A recently proposed approach for performing electronic-structure calculations on crystalline insulators in terms of localized orthogonal orbitals is applied to the oxides of lithium and sodium, Li2O and Na2O. Cohesive energies, lattice constants and bulk moduli of the aforementioned systems are determined at the Hartree-Fock level, and the corresponding values are shown to be in excellent agreement with the values obtained by a traditional Bloch-orbital-based Hartree-Fock approach. The present Wannier-function-based approach is expected to be advantageous in the treatment of electron-correlation effects in an infinite solid by conventional quantum-chemical methods.
Dolg Michael
Fulde Peter
Shukla Alok
Stoll Hermann
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