Extended Data Fig. 3: Peak intensities of the dynamical structure factors at the characteristic frequencies of the 2DPL model.
a, The intensity of the phononic components of the transverse and longitudinal modes as a function of q. Both the transverse and longitudinal intensity decay in a q−2 manner at low q. b, The intensity of the transverse quasi-localised modes, which increases with increasing q. This indicates that the quasi-localised modes become more dominant at higher q, proving that these modes have a localised nature different from phonons and diffusons.
