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  1. 1 Acta Physica Polonica A

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  1. 1 1995

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  1. 1 Coelho A. A.

  2. 1 Shukla M. M.

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Lattice Dynamics of Alkali Metals in a Three-Body Interaction

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Coelho A. A., Shukla M. M.
Acta Physica Polonica A
|
1995
|
vol. 87
|
issue 3
599-609
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.
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