Matches in SemOpenAlex for { <https://semopenalex.org/work/W3015619065> ?p ?o ?g. }
- W3015619065 abstract "Pronounced anomalies in the ${mathrm{SrTiO}}_{3}$ dynamical structure factor, $S(mathbf{Q},E)$, 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 acoustic and optic phonons and the incipient ferroelectric instability near the quantum critical point. It is rationalized using a first-principles renormalized anharmonic phonon approach, pointing to nonlinear Ti-O hybridization causing unusual changes in real-space phonon eigenvectors, frequencies, group velocities, and scattering phase space. Our method is general and establishes how $T$ dependences beyond the harmonic regime, assessed by INS mapping of large reciprocal-space volumes, provide real-space insights into anharmonic atomic dynamics near phase transitions." @default.
- W3015619065 created "2020-04-17" @default.
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- W3015619065 date "2020-04-09" @default.
- W3015619065 modified "2023-10-14" @default.
- W3015619065 title "Anharmonic Eigenvectors and Acoustic Phonon Disappearance in Quantum Paraelectric <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi>SrTiO</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>" @default.
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- W3015619065 doi "https://doi.org/10.1103/physrevlett.124.145901" @default.
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