Unconventional satellite resistance peaks in moiré superlattice of h-BN/ AB-stacked tetralayer-graphene heterostructure

Abstract

Most studies on moiré superlattices formed from a stack of h-BN and graphene have focused on single layer graphene; graphene with multiple layers is less understood. Here, we show that a moiré superlattice of multilayer graphene shows new features arising from the anisotropic Fermi surface affected by the superlattice structure. The moiré superlattice of a h-BN/AB-stacked tetralayer graphene heterostructure exhibited resistivity peaks showing a complicated dependence on the perpendicular electric field. The peaks were not due to secondary Dirac cones forming, but rather opening of the energy gap due to folding of the anisotropic Fermi surface. In addition, superlattice peaks resulted from mixing of light- and heavy-mass bilayer-like bands via the superlattice potential. The gaps did not open on the boundary of the superlattice Brillouin zone, but rather opened inside it, which reflected the anisotropy of the Fermi surface of multilayer graphene.

References in corpus (5)

• Emergence of Superlattice Dirac Points in Graphene on Hexagonal Boron Nitride
• Visibility of graphene flakes on a dielectric substrate
• Electronic properties of graphene hexagonal boron nitride moiré superlattice
• Zero Energy Modes and Gate-Tunable Gap in Graphene on hexagonal Boron Nitride
• Charge distribution and screening in layered graphene systems