LATTICE-DYNAMICS OF NOBLE-METALS ON EFFECTIVE 3-BODY INTERACTION

Quite recently we modified the original model of Sarkar et al. for cub ic metals in extending the ion-ion interaction, ion-electron interacti on and the introduction of crystal equilibrium condition. We applied o ur scheme to alkali metals. We studied here the lattice dynamics of no ble metals on our approach by calculating phonon dispersion relations along the three principal symmetry directions, [xi 00], [xi xi 0] and [xi xi xi] and the (theta-T) curves of three noble metals: copper, sil ver and gold. We obtained reasonable agreement with the experimental f indings.