Dynamical, dielectric, and elastic properties of GeTe

Details Dynamical, dielectric, and elastic properties of GeTe Dynamical, dielectric, and elastic properties of GeTe

2008-05-05

arxiv.org/abs/0805.0491v1

Physics

Condensed Matter

Materials Science

Scientific paper

10.1103/PhysRevB.78.205203

The dynamical, dielectric and elastic properties of GeTe, a ferroelectric material in its low temperature rhombohedral phase, have been investigated using first-principles density functional theory. We report the electronic energy bands, phonon dispersion curves, electronic and low frequency dielectric tensors, infra-red reflectivity, Born effective charges, elastic and piezoelectric tensors and compare them with the existing theoretical and experimental results, as well as with similar quantities available for other ferroelectric materials, when appropriate.

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