Mixing of surface and bulk electronic states at a graphite-hexagonal boron nitride interface
arXiv:2211.16420 · doi:10.1038/s41586-023-06264-5
Abstract
Van der Waals assembly enables exquisite design of electronic states in two-dimensional (2D) materials, often by superimposing a long-wavelength periodic potential on a crystal lattice using moiré superlattices. Here we show that electronic states in three-dimensional (3D) crystals such as graphite can also be tuned by the superlattice potential arising at the interface with another crystal, namely, crystallographically aligned hexagonal boron nitride. Such alignment is found to result in a multitude of Lifshitz transitions and Brown-Zak oscillations for near-surface 2D states whereas, in high magnetic fields, fractal states of Hofstadter's butterfly extend deep into graphite's bulk. Our work shows a venue to control 3D spectra by using the approach of 2D twistronics.
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Cited by in corpus (7)
- Surface ferromagnetism in rhombohedral heptalayer graphene moire superlattice
- Analytical Model for Atomic Relaxation in Twisted Moiré Materials
- Quantifying hydrogen bonding using electrically tunable nanoconfined water
- Dislocations in twistronic heterostructures
- Review: Advanced characterization of the spatial variation of moiré heterostructures and moiré excitons
- Moiré fractals in twisted graphene layers
- Solitons induced by an in-plane magnetic field in rhombohedral multilayer graphene