Capturing magic angles in twisted bilayer graphene from information theory markers
| Autor: | Calixto, Manuel, Mayorgas, Alberto, Castaños, Octavio |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Zero energy eigenstates $\psi_0(\theta)$ of the twisted bilayer graphene Hamiltonian at the Dirac point show a high sensitivity to the twist angle $\theta$ 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. Comment: 11 pages, 10 figures |
| Databáze: | arXiv |
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