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The group velocity of the acoustic phonons is determined arbitr arily close to the Γ-point along high- symmetry paths

SI NOTE: PHONON GROUP VELOCITIES The group velocity of phonons is defined by the following rela tion vq,σ = ∇ qω q,σ , (1) which is the gradient of the angular frequency ω q,σ as a function of the wave vector q · 2073

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Chiral Phonons in 2D Halide Perovskites

cond-mat.mtrl-sci · 2024-11-26 · unverdicted · novelty 5.0

Machine-learning simulations confirm that low-energy phonons in chiral 2D halide perovskites are circularly polarized and generate observable angular momentum under temperature gradients.

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  • Chiral Phonons in 2D Halide Perovskites cond-mat.mtrl-sci · 2024-11-26 · unverdicted · none · ref 13

    Machine-learning simulations confirm that low-energy phonons in chiral 2D halide perovskites are circularly polarized and generate observable angular momentum under temperature gradients.