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Dominant density parameters and local pseudopotentials for simple metals

The properties of the simple metals are controlled largely by three density parameters: the equilibrium average valence electron density 3/4πrs3, the valence z, and the density on the surface of the Wigner-Seitz cell, represented here by the equilibrium number Nint of valence electrons in the interstitial region. To demonstrate this fact, and as a refinement of the ‘‘stabilized jellium’’ or ‘‘structureless pseu...