189 citations · 1.1k across the 27 of their papers we have counts for
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Chern bands of twisted bilayer graphene: fractional Chern insulators and spin phase transition
Cécile Repellin, T. Senthil
When one of the graphene layers of Magic Angle Twisted Bilayer Graphene is nearly aligned with its hexagonal boron nitride substrate (a configuration dubbed TBG/hBN), the active el…
Ferromagnetism in narrow bands of moiré superlattices
Cécile Repellin, Zhihuan Dong, Ya-Hui Zhang +1
Many graphene moiré superlattices host narrow bands with non-zero valley Chern numbers. We provide analytical and numerical evidence for a robust spin and/or valley polarized insul…
Quantization in chiral higher order topological insulators: circular dichroism and local Chern marker
Oscar Pozo, Cécile Repellin, Adolfo G. Grushin
The robust quantization of observables in units of universal constants is a hallmark of topological phases. We show that chiral higher order topological insulators (HOTIs), bulk in…