Graphene Heterostructures and Electronic Properties

Graphene heterostructures—stacks of atomically thin layers bound by van der Waals forces—have revolutionised the study and control of electronic phenomena in two dimensions. By combining graphene with materials such as hexagonal boron nitride (hBN) and transition-metal dichalcogenides, researchers engineer moiré superlattices whose periodic potentials can dramatically reshape the Dirac-electron dispersion. Twistronics, the deliberate rotation between adjacent layers, unlocks regimes of strong correlation, flat bands and unconventional superconductivity. Under applied magnetic fields, these structures exhibit fractal Hofstadter-butterfly spectra and Brown–Zak oscillations, revealing intricate interactions between lattice geometry, electron dynamics and external fields. Recent advances in deterministic stacking, epitaxial growth and in situ manipulation have enabled precise control over twist angle, interlayer separation and alignment, opening pathways to room-temperature quantum effects and gate-tunable optoelectronics. Together, these developments position graphene heterostructures as a versatile platform for exploring emergent quasiparticles, novel transport regimes and next-generation electronic and photonic devices.

Research from Nature Portfolio

Recent studies have demonstrated that aligning graphite with hBN can extend twistronic control into three dimensions, revealing Lifshitz transitions and Brown–Zak oscillations that penetrate bulk electronic states under high magnetic fields. Experimental strategies based on crystallographic edge detection now allow deterministic fabrication of double-aligned hBN/graphene/hBN supermoiré lattices with twist-angle precision better than 0.2°, enabling systematic flat-band engineering in both bilayer and trilayer graphene systems. In addition, molecular beam epitaxy of monolayer graphene on hBN has produced moiré field-effect transistors that display robust Brown–Zak oscillations at temperatures up to 350 K, offering a route to room-temperature quantum devices grounded in heterostructure design.

Graphene Heterostructures and Electronic Properties publication trend

The graph below shows the total number of articles in graphene heterostructures and electronic properties across all publications each year (not limited to Nature Index journals).

Technical terms

Van der Waals heterostructure: A stack of two-dimensional materials held together by weak interlayer forces rather than covalent bonds.

Moiré superlattice: A large-scale periodic pattern that arises when two crystal lattices with slight mismatch or twist are overlaid.

Twistronics: The control of electronic properties by varying the twist angle between adjacent two-dimensional layers.

Dirac electrons: Charge carriers in graphene that behave as massless relativistic particles with linear energy–momentum dispersion.

Hofstadter butterfly: A fractal energy spectrum of electrons in a periodic lattice under a magnetic field.

Brown–Zak oscillations: Quantum oscillations in conductance that are periodic in the inverse magnetic field, arising from charge quantisation in moiré supercells.

Plasmon–polariton: A hybrid quasiparticle formed by strong coupling between plasmons (collective electron oscillations) and photons or other excitations.

Intersubband transition: An electronic transition between quantised energy levels perpendicular to the plane of a two-dimensional material.

References

1. Mixing of moiré-surface and bulk states in graphite. Nature (2023).
2. Controlled alignment of supermoiré lattice in double-aligned graphene heterostructures. Nature Communications (2023).
3. Emergence of tunable intersubband-plasmon-polaritons in graphene superlattices. Advanced Photonics (2023).
4. High-temperature Brown-Zak oscillations in graphene/hBN moiré field effect transistor fabricated using molecular beam epitaxy. Communications Materials (2024).
5. Kagome Quantum Oscillations in Graphene Superlattices. Nano Letters (2024).
6. In situ manipulation of van der Waals heterostructures for twistronics. Science Advances (2020).