Abstract
If one uses perturbation theory for the electronic contributions, the elastic moduli obtained from static deformations and from lattice vibrations do not agree in the same order [1, 2]. The reason for this is shown by employing a very simple lattice model: Thomas-Fermi-Theory for the electrons, Coulomb interaction and additive central force interaction between ions.
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Leibfried, G., Schober, H.R. Static and dynamic elastic moduli in the Thomas Fermi model. Z. Physik 260, 111–120 (1973). https://doi.org/10.1007/BF01448971
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DOI: https://doi.org/10.1007/BF01448971