Capturing magic angles in twisted bilayer graphene from information theory markers
arXiv:2409.07935 · doi:10.1016/j.physe.2025.116199
Abstract
Zero energy eigenstates of the twisted bilayer graphene Hamiltonian at the Dirac point show a high sensitivity to the twist angle near the magic angles where the effective Fermi velocity vanishes. We use information theory markers, like fidelity-susceptibility and entanglement entropy of the reduced density matrix to the layer sector, to capture this quantum criticality of zero modes at magic twist angles.
12 pages, 10 figures
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