Abstract
A rigid muffin-tin potential analysis is proposed for evaluating interatomic forces in metals. Using this theory, interatomic potential energy curves were calculated for Li, K and Rb. Despite the simple set of approximations used, these results are remarkably similar to the corresponding results obtained from pseudopotential theory. The rigid muffin-tin method is clearly useful for calculating interatomic forces in simple metals and should have a much wider application to all metallic systems.
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