Simulation of Hubbard model physics in WSe2/WS2 moiré superlattices

Y Tang, L Li, T Li, Y Xu, S Liu, K Barmak, K Watanabe… - Nature, 2020 - nature.com
The Hubbard model, formulated by physicist John Hubbard in the 1960s, is a simple
theoretical model of interacting quantum particles in a lattice. The model is thought to …

Intrinsic quantized anomalous Hall effect in a moiré heterostructure

M Serlin, CL Tschirhart, H Polshyn, Y Zhang, J Zhu… - Science, 2020 - science.org
The quantum anomalous Hall (QAH) effect combines topology and magnetism to produce
precisely quantized Hall resistance at zero magnetic field. We report the observation of a …

Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices

EC Regan, D Wang, C Jin, MI Bakti Utama, B Gao… - Nature, 2020 - nature.com
Moiré superlattices can be used to engineer strongly correlated electronic states in two-
dimensional van der Waals heterostructures, as recently demonstrated in the correlated …

Untying the insulating and superconducting orders in magic-angle graphene

P Stepanov, I Das, X Lu, A Fahimniya, K Watanabe… - Nature, 2020 - nature.com
The coexistence of superconducting and correlated insulating states in magic-angle twisted
bilayer graphene,,,,,,,,,–prompts fascinating questions about their relationship. Independent …

Cascade of electronic transitions in magic-angle twisted bilayer graphene

D Wong, KP Nuckolls, M Oh, B Lian, Y Xie, S Jeon… - Nature, 2020 - nature.com
Magic-angle twisted bilayer graphene exhibits a variety of electronic states, including
correlated insulators,–, superconductors,–and topological phases,,. Understanding the …

Symmetry breaking in twisted double bilayer graphene

M He, Y Li, J Cai, Y Liu, K Watanabe, T Taniguchi… - Nature Physics, 2021 - nature.com
The flat bands that appear in some twisted van der Waals heterostructures provide a setting
in which strong interactions between electrons lead to a variety of correlated …

Imaging orbital ferromagnetism in a moiré Chern insulator

CL Tschirhart, M Serlin, H Polshyn, A Shragai, Z Xia… - Science, 2021 - science.org
Electrons in moiré flat band systems can spontaneously break time-reversal symmetry,
giving rise to a quantized anomalous Hall effect. In this study, we use a superconducting …

Stacking order in graphite films controlled by van der Waals technology

Y Yang, YC Zou, CR Woods, Y Shi, J Yin, S Xu… - Nano …, 2019 - ACS Publications
In graphite crystals, layers of graphene reside in three equivalent, but distinct, stacking
positions typically referred to as A, B, and C projections. The order in which the layers are …

Anisotropic moiré optical transitions in twisted monolayer/bilayer phosphorene heterostructures

S Zhao, E Wang, EA Üzer, S Guo, R Qi, J Tan… - Nature …, 2021 - nature.com
Moiré superlattices of van der Waals heterostructures provide a powerful way to engineer
electronic structures of two-dimensional materials. Many novel quantum phenomena have …

[PDF][PDF] The interplay of insulating and superconducting orders in magic-angle graphene bilayers

P Stepanov, I Das, X Lu, A Fahimniya… - arXiv preprint arXiv …, 2019 - ciqm.harvard.edu
The recent discovery of superconducting and correlated insulating states coexisting in magic-
angle twisted bilayer graphene (1–11)(MAG) at commensurate fillings have raised …