Extended Data Fig. 8: Bulk-graphite phonon dispersion model.
From: Quantum twisting microscopy of phonons in twisted bilayer graphene
a, The phonon dispersions (dashed lines) obtained from the model in ref. 51 augmented by adding interlayer mechanical coupling (detailed in this section). The calculation is overlaid on the measured graphite–graphite phonon spectrum shown in Fig. 1f. b, Phonon dispersions obtained from the model in ref. 52, overlaid with the measured graphite–graphite phonon spectrum shown in Fig. 1f. In the main text, we use the first model, as it fits the measurements more accurately.
