Hexagonal Lattice Phonons
Phonon dispersion on honeycomb lattice — acoustic vs. optical branches
Lattice Parameters
Force constant κ₁:
1.0
Next-NN κ₂:
0.2
Mass ratio M₂/M₁:
1.0
Animation speed:
1.0
Optical (high freq)
Acoustic (low freq)
Honeycomb = 2-atom basis.
K-point: Dirac cone for
equal masses (graphene).
Gap opens when M₁ ≠ M₂.
Click lattice to excite mode.