Temperature Dependent Collective Dynamics of Liquid Alkali Metals

The properties of the liquid metals are of great interest both because of their fundamental importance as well as their engineering applications. Considering a fact that local pseudopotentials offer mathematical ease, non-local pseudopotentials are to be preferred for correct assessment of the physical properties. However, with an intension to include features of the non-locality into the local potential formulation, a modified empty core potential was used. We believe that the present estimates for different thermo-elastic properties may serve as good starting point and the guideline for future study, and provide means of comparison for the dynamical phenomena. Present study also brings the fact that the properties are sensitive to temperature, so its temperature variation is therefore a clue to understand temperature variation of elastic properties. Thus, in the absence of experimental results at high temperatures such calculations may be considered as the guideline for further theoretical or experimental investigations.