Fractional quantum anomalous Hall effect in multilayer graphene

Z Lu, T Han, Y Yao, AP Reddy, J Yang, J Seo… - Nature, 2024 - nature.com
The fractional quantum anomalous Hall effect (FQAHE), the analogue of the fractional
quantum Hall effect at zero magnetic field, is predicted to exist in topological flat bands …

Correlated insulator and Chern insulators in pentalayer rhombohedral-stacked graphene

T Han, Z Lu, G Scuri, J Sung, J Wang, T Han… - Nature …, 2024 - nature.com
Rhombohedral-stacked multilayer graphene hosts a pair of flat bands touching at zero
energy, which should give rise to correlated electron phenomena that can be tuned further …

Orbital multiferroicity in pentalayer rhombohedral graphene

T Han, Z Lu, G Scuri, J Sung, J Wang, T Han… - Nature, 2023 - nature.com
Ferroic orders describe spontaneous polarization of spin, charge and lattice degrees of
freedom in materials. Materials exhibiting multiple ferroic orders, known as multiferroics …

Anomalous Hall crystals in rhombohedral multilayer graphene. I. Interaction-driven Chern bands and fractional quantum Hall states at zero magnetic field

J Dong, T Wang, T Wang, T Soejima, MP Zaletel… - Physical Review Letters, 2024 - APS
Recent experiments on rhombohedral pentalayer graphene with a substrate-induced moiré
potential have identified both Chern insulators and fractional quantum Hall states at zero …

Recent advances in magnetism of graphene from 0D to 2D

Z Li, S Li, Y Xu, N Tang - Chemical Communications, 2023 - pubs.rsc.org
Graphene appears as a promising candidate in the spintronic application due to its
fascinating electrical properties. A large number of theoretical and experimental studies …

Advance in two-dimensional twisted moiré materials: Fabrication, properties, and applications

H Yang, L Liu, H Yang, Y Zhang, X Wu, Y Huang… - Nano Research, 2023 - Springer
Abstract Two-dimensional (2D) twisted moiré materials, a new class of van der Waals (vdW)
layered heterostructures with different twist angles between neighboring layers, have …

Fractional quantum anomalous hall effect in a graphene moire superlattice

Z Lu, T Han, Y Yao, AP Reddy, J Yang, J Seo… - arXiv preprint arXiv …, 2023 - arxiv.org
The fractional quantum anomalous Hall effect (FQAHE), the analog of the fractional quantum
Hall effect at zero magnetic field, is predicted to exist in topological flat bands under …

Topological charge density waves at half-integer filling of a moiré superlattice

H Polshyn, Y Zhang, MA Kumar, T Soejima, P Ledwith… - Nature Physics, 2022 - nature.com
When a flat band is partially filled with electrons, strong Coulomb interactions between them
may lead to the emergence of topological gapped states with quantized Hall conductivity …

Observation of a Chern insulator in crystalline ABCA-tetralayer graphene with spin-orbit coupling

Y Sha, J Zheng, K Liu, H Du, K Watanabe, T Taniguchi… - Science, 2024 - science.org
Degeneracies in multilayer graphene, including spin, valley, and layer degrees of freedom,
can be lifted by Coulomb interactions, resulting in rich broken-symmetry states. Here, we …

Tunable quantum criticalities in an isospin extended Hubbard model simulator

Q Li, B Cheng, M Chen, B Xie, Y Xie, P Wang, F Chen… - Nature, 2022 - nature.com
Studying strong electron correlations has been an essential driving force for pushing the
frontiers of condensed matter physics. In particular, in the vicinity of correlation-driven …