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cond-mat.str-el2025
Resonating-valence-bond superconductor from small Fermi surface in twisted bilayer graphene
Jing-Yu Zhao, Ya-Hui Zhang
Understanding the mechanism of superconductivity in twisted bilayer graphene (TBG) is a central challenge in correlated moiré materials. The most intriguing question is about the n…
cond-mat.str-el2025
Mixed valence Mott insulator and composite excitation in twisted bilayer graphene
Jing-Yu Zhao, Boran Zhou, Ya-Hui Zhang
Interplay of strong correlation and flat topological band has been a central problem in moiré systems such as the magic angle twisted bilayer graphene (TBG). Recent studies show th…
cond-mat.str-el2025
Ancilla theory of twisted bilayer graphene I: topological Mott localization and pseudogap metal in twisted bilayer graphene
Jing-Yu Zhao, Boran Zhou, Ya-Hui Zhang
The recent experimental studies of twisted bilayer graphene (TBG) raise a fundamental question: how do we understand Mott localization in a topological band? In this work, we offer…