Under modest tensile strain, SrTiO3 develops a polar vibrational mode at finite wavevector, indicating a textured polar phase on nanometer scales rather than uniform ferroelectric order.
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cond-mat.mtrl-sci 2years
2026 2verdicts
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A simplified first-principles formalism incorporating anharmonic phonon effects predicts frequency-dependent refractive indices of MgO and rutile TiO2 in good agreement with experiment.
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A textured polar phase in strained SrTiO3
Under modest tensile strain, SrTiO3 develops a polar vibrational mode at finite wavevector, indicating a textured polar phase on nanometer scales rather than uniform ferroelectric order.
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A first-principles approach for predicting infrared optical properties of solids
A simplified first-principles formalism incorporating anharmonic phonon effects predicts frequency-dependent refractive indices of MgO and rutile TiO2 in good agreement with experiment.