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Topological properties in magic-angle twisted bilayer graphene

Published on:

7 September 2023

Primary Category:

Superconductivity

Paper Authors:

Yantao Li,

Benjamin M. Fregoso,

Maxim Dzero

Bullets

Key Details

Develops topological heavy fermion model for magic-angle twisted bilayer graphene

Derives new self-consistent mean field equations using slave-boson method

Solves equations numerically to find solutions in mixed valence regime

Model describes physics at edge of Mott insulator, related to superconductivity

Provides new perspective on origin of unconventional superconductivity in this system

AI generated summary

Topological properties in magic-angle twisted bilayer graphene

This paper develops a model to describe the topological properties that emerge in magic-angle twisted bilayer graphene. The authors employ a large-N slave-boson approach to derive self-consistent mean field equations that capture the physics near the Mott insulator regime when strong Coulomb interactions are present between the flat-band electrons. Their model provides insight into the possible microscopic origin of unconventional superconductivity in this system.

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