Moire superlattice effects in graphene/boron-nitride van der Waals heterostructures

TL;DR

This paper reviews the effects of moiré superlattices in graphene/boron-nitride heterostructures, highlighting miniband structures, secondary Dirac points, and Hofstadter's butterfly fractal spectrum.

Contribution

It provides a comprehensive review of the electronic phenomena induced by moiré superlattices in graphene/boron-nitride heterostructures, emphasizing their unique miniband and fractal spectra.

Findings

Identification of miniband gaps and secondary Dirac points

Observation of Hofstadter's butterfly fractal spectrum

Analysis of moiré superlattice effects on electronic properties

Abstract

Van der Waals heterostructures of graphene and hexagonal boron nitride feature a moir\'e superlattice for graphene's Dirac electrons. Here, we review the effects generated by this superlattice, including a specific miniband structure featuring gaps and secondary Dirac points, and a fractal spectrum of magnetic minibands known as Hofstadter's butterfly.