Composite Fermi Liquid at Zero Magnetic Field in Twisted
The pursuit of exotic phases of matter outside of the extreme conditions of a quantizing
magnetic field is a long-standing quest of solid state physics. Recent experiments have …
magnetic field is a long-standing quest of solid state physics. Recent experiments have …
Anomalous Hall crystals in rhombohedral multilayer graphene. I. Interaction-driven Chern bands and fractional quantum Hall states at zero magnetic field
Recent experiments on rhombohedral pentalayer graphene with a substrate-induced moiré
potential have identified both Chern insulators and fractional quantum Hall states at zero …
potential have identified both Chern insulators and fractional quantum Hall states at zero …
Magic-angle helical trilayer graphene
We propose magic-angle helical trilayer graphene (HTG), a helical structure featuring
identical rotation angles between three consecutive layers of graphene, as a unique and …
identical rotation angles between three consecutive layers of graphene, as a unique and …
Pressure-enhanced fractional Chern insulators along a magic line in moiré transition metal dichalcogenides
We show that pressure applied to twisted WSe 2 can enhance the many-body gap and
region of stability of a fractional Chern insulator at filling ν= 1/3. Our results are based on …
region of stability of a fractional Chern insulator at filling ν= 1/3. Our results are based on …
Fractional Chern insulators versus nonmagnetic states in twisted bilayer
J Yu, J Herzog-Arbeitman, M Wang, O Vafek… - Physical Review B, 2024 - APS
Fractionally filled Chern bands with strong interactions may give rise to fractional Chern
insulator (FCI) states, the zero-field analog of the fractional quantum Hall effect. Recent …
insulator (FCI) states, the zero-field analog of the fractional quantum Hall effect. Recent …
Fractional quantum anomalous Hall effect in rhombohedral multilayer graphene in the moiréless limit
The standard theoretical framework for fractional quantum anomalous Hall (FQAH) effect
assumes an isolated flat Chern band in the single particle level. In this Letter, we challenge …
assumes an isolated flat Chern band in the single particle level. In this Letter, we challenge …
Untwisting moiré physics: Almost ideal bands and fractional Chern insulators in periodically strained monolayer graphene
Moiré systems have emerged in recent years as a rich platform to study strong correlations.
Here, we will propose a simple, experimentally feasible setup based on periodically strained …
Here, we will propose a simple, experimentally feasible setup based on periodically strained …
Ideal Chern bands as Landau levels in curved space
We prove that all the criteria proposed in the literature to identify a Chern band hosting exact
fractional Chern insulating ground states, in fact, describe an equivalence with a lowest …
fractional Chern insulating ground states, in fact, describe an equivalence with a lowest …
Non-Abelian fractional quantum anomalous Hall states and first Landau level physics of the second moiré band of twisted bilayer
Utilizing the realistic continuum description of twisted bilayer MoTe 2 and many-body exact
diagonalization calculation, we establish that the second moiré band of twisted bilayer MoTe …
diagonalization calculation, we establish that the second moiré band of twisted bilayer MoTe …
Adiabatic approximation and Aharonov-Casher bands in twisted homobilayer transition metal dichalcogenides
Topological flat moiré bands with nearly ideal quantum geometry have been identified in
homobilayer transition metal dichalcogenide moiré superlattices, and are thought to be …
homobilayer transition metal dichalcogenide moiré superlattices, and are thought to be …