Transport signatures of secondary moir\'{e}s in triply-stacked graphene

Although two-layer van der Waals heterostructures already exhibit a vast range of electronic and topological behaviors, stacking beyond two layers provides us with even more possibilities to explore new quantum phenomena. While the longest moir\'{e} wavelength arising from stacking two layers of similar lattice constants is controlled by the lattice periodicity, this longest wavelength involves higher harmonics of the periodic electronic distribution when stacking three or more layers. We fabricated high quality, dual-gated triply-stacked graphene devices encapsulated by hexagonal boron nitride, where the rotational misalignments between the three layers of graphene are controlled independently. We investigate via transport measurements the existence of these secondary moir\'{e}s, and the nature of interlayer hopping and hybridization in triply-stacked graphene.