Abstract
Abstract A method for calculating from first principles the interaction between ions in a metal, and therefore, the phonon dispersion curves, is described. Developments in the understanding of metals which lead upto this approach are indicated and the main approach outlined. A description is given of the picture of the interaction between ions in a metal which emerges, and explicit curves representing this interaction in aluminum are displayed. The implications of the theory with respect to phonon dispersion are discussed; in particular, a possible cause of observed irregularities in the dispersion curves is indicated.
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