Extended Data Fig. 6: Modified KC potential.
From: Unconventional ___domain tessellations in moiré-of-moiré lattices
Spurious out-of-plane displacement of Bernal-stacked (a) and rhombohedral-stacked (b) trilayer graphene. Red arrows indicate tiny but finite displacements around 1.4 × 10−3 Angstrom. c, Gaussian-type next-nearest-neighbour interlayer interaction potential that depends only on the plane-projected distance r∥ between carbon atoms on the top and bottom layers. d, The energy difference between Bernal (EB) and rhombohedral (ER) trilayer graphene as a function of control parameter V. Without V, EB is larger than ER with KC potential. With V > 0.15 meV, the Bernal stacking becomes more stable than the rhombohedral stacking.
