Ab initio Determination of Structural and Dynamical Properties of Mg2Sn

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Phonon States And Bands, Normal Modes, And Phonon Dispersion, Density Functional Theory, Local Density Approximation, Gradient And Other Corrections, Semiconductor Compounds, Ii-Vi Semiconductors, Metals, Semimetals, And Alloys

Scientific paper

We have studied structural and dynamical properties of Mg2Sn by employing an ab-initio pseudopotential method and a linear response scheme, within the generalised gradient approximation. The calculated lattice constant, bulk modulus and pressure derivative of bulk modulus are in agreement with previous ab-initio calculations and available experimental results. The calculated phonon spectra are in good agreement with inelastic neutron scattering measurements along the main symmetry directions.

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