159 citations · 1.6k across the 80 of their papers we have counts for
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Lattice Model For The Quantum Anomalous Hall Effect in Moiré Graphene
Ahmed Khalifa, Ganpathy Murthy, Ribhu K. Kaul
Inspired by experiments on magic angle twisted bilayer graphene, we present a lattice mean-field model for the quantum anomalous Hall effect in a moiré setting. Our hopping model t…
Global phase diagram of charge neutral graphene in the quantum Hall regime for generic interactions
Suman Jyoti De, Ankur Das, Sumathi Rao +2
Monolayer graphene at charge neutrality in a quantizing magnetic field is a quantum Hall ferromagnet. Due to the spin and valley (near) degeneracies, there is a plethora of possibl…
Absence of Edge States in The Valley Chern Insulator in Moiré Graphene
Ahmed Khalifa, Ganpathy Murthy, Ribhu K. Kaul
We study the edge spectrum of twisted sheets of single layer and bilayer graphene in cases where the continuum model predicts a valley Chern insulator -- an insulating state in whi…
Electrically switchable tunneling across a graphene pn junction: evidence for canted antiferromagnetic phase in state
Arup Kumar Paul, Manas Ranjan Sahu, Kenji Watanabe +4
The ground state of a graphene sheet at charge neutrality in a perpendicular magnetic field remains enigmatic, with various experiments supporting canted antiferromagnetic, bond or…