Phonon dispersion relations for noble metals has been studied on the basis of the pseudopotential due to George et al. (1978). The cardinal interest for the present work was to study the relative importance of axially symmetric and general tensor forces, between the nearest neighbours and to explore the possibility of a simple pseudopotential for noble metals. It is found that the tensor forces up to first neighbours do play an important role and that a simple pseudopotential can be used as a 'working' potential to study the phonon dispersion curves of noble metals.
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Gohel et al. (1985) studied this question.