Lattice Dynamics of Alkali Metals in a Three-Body Interaction

• Authors: A.A. Coelho , M.M. Shukla
• Languages of publication: EN

Abstracts

EN

The original model of Das et al. is modified in extending the electron-ion interaction on a three-body forces and including the crystal equilibrium con­dition to reduce one independent parameter. We studied the phonon dis­persion relations along the three principal symmetry directions i.e. [ξ,0,0], [ξ,ξ,0] and [ξ,ξ,ξ] and θ-T curves of alkali metals, Na, K, Rb, Cs and Li. There is close agreement between the computed results and the experimental observations.

Keywords

EN

65.40.-f; 63.20.-e

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 87
• Issue: 3
• Pages: 599-609

Dates

published

1995-03

received

1994-03-23

Contributors

author

A.A. Coelho

• Instituto de Fisica, UNICAMP, C.P. 6165, 13081 Campinas, SP, Brasil

author

M.M. Shukla

• Departamento de Fisica, UNESP, C.P. 473, 17033 Bauru, SP, Brasil