New generation of moiré superlattices in doubly aligned hBN/graphene/hBN heterostructures
arXiv:1812.10031 · doi:10.1021/acs.nanolett.8b05061
Abstract
The specific rotational alignment of two-dimensional lattices results in a moiré superlattice with a larger period than the original lattices and allows one to engineer the electronic band structure of such materials. So far, transport signatures of such superlattices have been reported for graphene/hBN and graphene/graphene systems. Here we report moiré superlattices in fully hBN encapsulated graphene with both the top and the bottom hBN aligned to the graphene. In the graphene, two different moiré superlattices form with the top and the bottom hBN, respectively. The overlay of the two superlattices can result in a third superlattice with a period larger than the maximum period (14 nm) in the graphene/hBN system, which we explain in a simple model. This new type of band structure engineering allows one to artificially create an even wider spectrum of electronic properties in two-dimensional materials.
References in corpus (16)
- The electronic properties of graphene
- Boron nitride substrates for high-quality graphene electronics
- STM Spectroscopy of ultra-flat graphene on hexagonal boron nitride
- Emergence of Superlattice Dirac Points in Graphene on Hexagonal Boron Nitride
- Detecting Topological Currents in Graphene Superlattices
- Anisotropic behaviors of massless Dirac fermions in graphene under periodic potential
- Twistronics: Manipulating the Electronic Properties of Two-dimensional Layered Structures through their Twist Angle
- New Generation of Massless Dirac Fermions in Graphene under External Periodic Potentials
- Superlattice-induced insulating states and valley-protected orbits in twisted bilayer graphene
- Electronic properties of graphene hexagonal boron nitride moiré superlattice
- Zero Energy Modes and Gate-Tunable Gap in Graphene on hexagonal Boron Nitride
- Hierarchy of Hofstadter states and replica quantum Hall ferromagnetism in graphene superlattices
- High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices
- Transport in superlattices on single layer graphene
- Fabry-Pérot resonances in a graphene/hBN Moiré superlattice
- Effective Magnetic Fields in Graphene Superlattices