125 citations · 644 across the 36 of their papers we have counts for
4 papers · 1 filter
Theory of competing excitonic orders in insulating WTe monolayers
Yves H. Kwan, T. Devakul, S. L. Sondhi +1
We develop a theory of the excitonic phase recently proposed as the zero-field insulating state observed near charge neutrality in monolayer WTe. Using a Hartree-Fock approxima…
Domain wall competition in the Chern insulating regime of twisted bilayer graphene
Yves H. Kwan, Glenn Wagner, Nilotpal Chakraborty +2
We consider magic-angle twisted bilayer graphene (TBG) at filling , where experiments have observed a robust quantized anomalous Hall effect. This has been attributed to the…
Excitonic fractional quantum Hall hierarchy in Moiré heterostructures
Yves H. Kwan, Yichen Hu, Steven H. Simon +1
We consider fractional quantum Hall states in systems where two flat Chern number bands are labeled by an approximately conserved 'valley' index and interchanged by time…
Exciton band topology in spontaneous quantum anomalous Hall insulators: applications to twisted bilayer graphene
Yves H. Kwan, Yichen Hu, Steven H. Simon +1
We uncover topological features of neutral particle-hole pair excitations of correlated quantum anomalous Hall (QAH) insulators whose approximately flat conduction and valence band…