Anharmonic Eigenvectors and Acoustic Phonon Disappearance in Quantum Paraelectric SrTiO_{3}.
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DOI: 10.1103/physrevlett.124.145901
Abstract: Pronounced anomalies in the SrTiO_{3} dynamical structure factor, S(Q,E), including the disappearance of acoustic phonon branches at low temperatures, were uncovered with inelastic neutron scattering (INS) and simulations. The striking effect reflects anharmonic couplings between… read more here.
Keywords: eigenvectors acoustic; space; disappearance; anharmonic eigenvectors ... See more keywords