Emerging exciton physics in transition metal dichalcogenide heterobilayers

EC Regan, D Wang, EY Paik, Y Zeng, L Zhang… - Nature Reviews …, 2022 - nature.com
Atomically thin transition metal dichalcogenides (TMDs) are 2D semiconductors with tightly
bound excitons and correspondingly strong light–matter interactions. Owing to the weak van …

Excitons and emergent quantum phenomena in stacked 2D semiconductors

NP Wilson, W Yao, J Shan, X Xu - Nature, 2021 - nature.com
The design and control of material interfaces is a foundational approach to realize
technologically useful effects and engineer material properties. This is especially true for two …

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 …

Tunable correlated Chern insulator and ferromagnetism in a moiré superlattice

G Chen, AL Sharpe, EJ Fox, YH Zhang, S Wang… - Nature, 2020 - nature.com
Studies of two-dimensional electron systems in a strong magnetic field revealed the
quantum Hall effect, a topological state of matter featuring a finite Chern number C and …

Electronic-structure methods for twisted moiré layers

S Carr, S Fang, E Kaxiras - Nature Reviews Materials, 2020 - nature.com
When single layers of 2D materials are stacked on top of one another with a small twist in
orientation, the resulting structure often involves incommensurate moiré patterns. In these …

Pressure-controlled interlayer magnetism in atomically thin CrI3

T Li, S Jiang, N Sivadas, Z Wang, Y Xu, D Weber… - Nature materials, 2019 - nature.com
Stacking order can influence the physical properties of two-dimensional van der Waals
materials,. Here we applied hydrostatic pressure up to 2 GPa to modify the stacking order in …

Stacking-Dependent Magnetism in Bilayer CrI3

N Sivadas, S Okamoto, X Xu, CJ Fennie, D Xiao - Nano letters, 2018 - ACS Publications
We report the connection between the stacking order and magnetic properties of bilayer CrI3
using first-principles calculations. We show that the stacking order defines the magnetic …

Topological insulators in twisted transition metal dichalcogenide homobilayers

F Wu, T Lovorn, E Tutuc, I Martin, AH MacDonald - Physical review letters, 2019 - APS
We show that moiré bands of twisted homobilayers can be topologically nontrivial, and
illustrate the tendency by studying valence band states in±K valleys of twisted bilayer …

Hubbard model physics in transition metal dichalcogenide moiré bands

F Wu, T Lovorn, E Tutuc, AH MacDonald - Physical review letters, 2018 - APS
Flexible long period moiré superlattices form in two-dimensional van der Waals crystals
containing layers that differ slightly in lattice constant or orientation. In this Letter we show …

Evidence of a gate-tunable Mott insulator in a trilayer graphene moiré superlattice

G Chen, L Jiang, S Wu, B Lyu, H Li, BL Chittari… - Nature Physics, 2019 - nature.com
The Mott insulator is a central concept in strongly correlated physics and manifests when the
repulsive Coulomb interaction between electrons dominates over their kinetic energy …