Interatomic force constants and normal modes of GaAs

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Abstract

By using group theoretical methods, the dynamical equations for GaAs can be simplified and the analytical solutions for the normal modes of all transverse and longitudinal branches and elastic constants can be deduced directly. The interactions are assumed to consist of Coulomb forces with an effective charge and a general force field up to and including seventh neighbors. The effective charge, the force constants and the normal modes along Δ, Σ and Λ are calculated from the experimental frequencies and elastic constants. The results are discussed and a comparison with previous calculations is presented. © 1986.

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APA

Cao, X. (1986). Interatomic force constants and normal modes of GaAs. Journal of Physics and Chemistry of Solids, 47(10), 981–986. https://doi.org/10.1016/0022-3697(86)90112-5

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