COLLECTIVE EXCITATIONS AND GENERALIZED TRANSPORT COEFFICIENTS IN A MOLTEN METALLIC ALLOY LI₄PB

Abstract

Collective dynamics of a molten metallic alloy Li4Pb is studied using a combination of analytical multivariable approach of generalized collective modes and molecular dynamics simulations. Dispersion and damping of two branches of propagating collective excitations are analyzed in a wide range of wavenumbers. The features in collective dynamics connected with the large difference in species mass are discussed. Generalized k-dependent transport coefficients for Li4Pb are reported.

Keywords

• collective dynamics
• binary liquid
• collective excitation
• generalized transport coefficients