Evidence for a monolayer excitonic insulator
The interplay between topology and correlations can generate a variety of quantum phases,
many of which remain to be explored. Recent advances have identified monolayer WTe2 as …
many of which remain to be explored. Recent advances have identified monolayer WTe2 as …
Correlated interlayer exciton insulator in heterostructures of monolayer WSe2 and moiré WS2/WSe2
Moiré superlattices in van der Waals heterostructures have emerged as a powerful tool for
engineering quantum phenomena. Here we report the observation of a correlated interlayer …
engineering quantum phenomena. Here we report the observation of a correlated interlayer …
Quantum anomalous Hall effect from inverted charge transfer gap
A general mechanism is presented by which topological physics arises in strongly correlated
systems without flat bands. Starting from a charge transfer insulator, topology emerges when …
systems without flat bands. Starting from a charge transfer insulator, topology emerges when …
Flat-band-enabled triplet excitonic insulator in a diatomic kagome lattice
The excitonic insulator (EI) state is a strongly correlated many-body ground state, arising
from an instability in the band structure toward exciton formation. We show that the flat …
from an instability in the band structure toward exciton formation. We show that the flat …
Signatures of the exciton gas phase and its condensation in monolayer 1T-ZrTe2
The excitonic insulator (EI) is a Bose-Einstein condensation (BEC) of excitons bound by
electron-hole interaction in a solid, which could support high-temperature BEC transition …
electron-hole interaction in a solid, which could support high-temperature BEC transition …
Common microscopic origin of the phase transitions in Ta2NiS5 and the excitonic insulator candidate Ta2NiSe5
The structural phase transition in Ta2NiSe5 has been envisioned as driven by the formation
of an excitonic insulating phase. However, the role of structural and electronic instabilities on …
of an excitonic insulating phase. However, the role of structural and electronic instabilities on …
Charge density waves in Weyl semimetals
We present a theory of charge density wave (CDW) states in Weyl semimetals and their
interplay with the chiral anomaly. In particular, we demonstrate a special nature of the …
interplay with the chiral anomaly. In particular, we demonstrate a special nature of the …
Topological order in interacting semimetals
It has recently been demonstrated that it is possible to open a gap in a magnetic Weyl
semimetal, while preserving the chiral anomaly along with the charge conservation and …
semimetal, while preserving the chiral anomaly along with the charge conservation and …
Robust high-temperature topological excitonic insulator of transition-metal carbide MXenes
S Dong, Y Li - Physical Review B, 2023 - APS
Topological excitonic insulators combine topological edge states and spontaneous exciton
condensation, with dual functionality of topological insulators and excitonic insulators. Yet …
condensation, with dual functionality of topological insulators and excitonic insulators. Yet …
Topological excitonic corner states and nodal phase in bilayer quantum spin Hall insulators
Interaction induced topological states remain one of the most fascinating phenomena in
condensed matter physics. The exciton condensate has recently sparked renewed interest …
condensed matter physics. The exciton condensate has recently sparked renewed interest …