Density Functional Approach to the Surface Tension of Liquid Metals

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Abstract

The local density functional formalism of Evans and Hasegawa, previously developed for the study of surface properties, is re‐examined by including nonlocality of pseudopotential in the theory. It is found that (i) when the pseudopotential is nonlocal, the fourth order density gradient correction of Ma and Sahni must be included in order that the density profiles obtained are physically meaningful and (ii) the first order perturbation is inadequate for understanding the surface tension of simple liquid metalsin accordance with conclusions made by other investigators.

Original languageEnglish
Pages (from-to)685-691
Number of pages7
JournalPhysica Status Solidi (B) Basic Research
Volume136
Issue number2
DOIs
StatePublished - 1 Aug 1986

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