Observation of Integer and Fractional Quantum Anomalous Hall Effects in Twisted Bilayer
The interplay between strong correlations and topology can lead to the emergence of
intriguing quantum states of matter. One well-known example is the fractional quantum Hall …
intriguing quantum states of matter. One well-known example is the fractional quantum Hall …
Fractional Chern Insulator in Twisted Bilayer
A recent experiment has reported the first observation of a zero-field fractional Chern
insulator (FCI) phase in twisted bilayer MoTe 2 moiré superlattices [J. Cai, Signatures of …
insulator (FCI) phase in twisted bilayer MoTe 2 moiré superlattices [J. Cai, Signatures of …
Recent developments in fractional Chern insulators
Fractional Chern insulators (FCIs) are lattice generalizations of the conventional fractional
quantum Hall effect (FQHE) in two-dimensional (2D) electron gases. They typically arise in a …
quantum Hall effect (FQHE) in two-dimensional (2D) electron gases. They typically arise in a …
Zero-field composite Fermi liquid in twisted semiconductor bilayers
Recent experiments have produced evidence for fractional quantum anomalous Hall
(FQAH) states at zero magnetic field in the semiconductor moiré superlattice system t MoTe …
(FQAH) states at zero magnetic field in the semiconductor moiré superlattice system t MoTe …
Anomalous Hall metal and fractional Chern insulator in twisted transition metal dichalcogenides
We predict robust Ising ferromagnetism driven by Coulomb interaction in the metallic phase
of twisted transition metal dichalcogenide homobilayers for a range of small twist angles …
of twisted transition metal dichalcogenide homobilayers for a range of small twist angles …
Exact landau level description of geometry and interaction in a flatband
Flatbands appear in many condensed matter systems, including the two-dimensional
electron gas in a high magnetic field, correlated materials, and moiré heterostructures. They …
electron gas in a high magnetic field, correlated materials, and moiré heterostructures. They …
Spontaneous fractional Chern insulators in transition metal dichalcogenide moiré superlattices
The Moiré superlattice realized in two-dimensional heterostructures offers an exciting
platform to access strongly correlated electronic states. In this work, we study transition metal …
platform to access strongly correlated electronic states. In this work, we study transition metal …
Vortexability: A unifying criterion for ideal fractional Chern insulators
Fractional Chern insulators realize the remarkable physics of the fractional quantum Hall
effect (FQHE) in crystalline systems with Chern bands. The lowest Landau level (LLL) is …
effect (FQHE) in crystalline systems with Chern bands. The lowest Landau level (LLL) is …
Hierarchy of ideal flatbands in chiral twisted multilayer graphene models
We propose models of twisted multilayer graphene that exhibit exactly flat Bloch bands with
arbitrary Chern numbers and ideal band geometries. The models are constructed by twisting …
arbitrary Chern numbers and ideal band geometries. The models are constructed by twisting …
Family of ideal chern flatbands with arbitrary chern number in chiral twisted graphene multilayers
We consider a family of twisted graphene multilayers consisting of n-untwisted chirally
stacked layers, eg, AB, ABC, etc, with a single twist on top of m-untwisted chirally stacked …
stacked layers, eg, AB, ABC, etc, with a single twist on top of m-untwisted chirally stacked …