481 citations · 499 across the 4 of their papers we have counts for
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Fermionic Monte Carlo study of a realistic model of twisted bilayer graphene
Johannes S. Hofmann, Eslam Khalaf, Ashvin Vishwanath +2
The rich phenomenology of twisted bilayer graphene (TBG) near the magic angle is believed to arise from electron correlations in topological flat bands. An unbiased approach to thi…
Soft modes in magic angle twisted bilayer graphene
Eslam Khalaf, Nick Bultinck, Ashvin Vishwanath +1
We present a systematic study of the low-energy collective modes for different insulating states at integer fillings in twisted bilayer graphene. In particular, we provide a simple…
A search for correlation-induced adiabatic paths between distinct topological insulators
Johannes S. Hofmann, Fakher F. Assaad, Raquel Queiroz +1
Correlations in topological states of matter provide a rich phenomenology, including a reduction in the topological classification of the interacting system compared to its non-int…
Fractional Chern Insulator States in Twisted Bilayer Graphene: An Analytical Approach
Patrick J. Ledwith, Grigory Tarnopolsky, Eslam Khalaf +1
Recent experiments on bilayer graphene twisted near the magic angle have observed spontaneous integer quantum Hall states in the presence of an aligned hexagonal boron nitride (hBN…
Ground State and Hidden Symmetry of Magic Angle Graphene at Even Integer Filling
Nick Bultinck, Eslam Khalaf, Shang Liu +3
In magic angle twisted bilayer graphene, electron-electron interactions play a central role resulting in correlated insulating states at certain integer fillings. Identifying the n…
Theory of correlated insulating behaviour and spin-triplet superconductivity in twisted double bilayer graphene
Jong Yeon Lee, Eslam Khalaf, Shang Liu +4
Two monolayers of graphene twisted by a small `magic' angle exhibit nearly flat bands leading to correlated electronic states and superconductivity, whose precise nature including…