Dynamical correlations and order in magic-angle twisted bilayer graphene

G Rai, L Crippa, D Călugăru, H Hu, F Paoletti… - Physical Review X, 2024 - APS
The interplay of dynamical correlations and electronic ordering is pivotal in sha** phase
diagrams of correlated quantum materials. In magic-angle twisted bilayer graphene …

Topological flat bands, valley polarization, and interband superconductivity in magic-angle twisted bilayer graphene with proximitized spin-orbit couplings

YZ Chou, Y Tan, F Wu, S Das Sarma - Physical Review B, 2024 - APS
We study theoretically the magic-angle twisted bilayer graphene with proximity-induced
Ising and Rashba spin-orbit couplings on the top layer. Topological flat bands (with three …

Electron-phonon coupling and competing kekulé orders in twisted bilayer graphene

YH Kwan, G Wagner, N Bultinck, SH Simon, E Berg… - Physical Review B, 2024 - APS
Recent scanning tunneling microscopy experiments in twisted bilayer [KP Nuckolls et al.,
Nature (London) 620, 525 (2023) 0028-0836 10.1038/s41586-023-06226-x] and trilayer [H …

Electron-phonon coupling in the topological heavy fermion model of twisted bilayer graphene

YJ Wang, GD Zhou, B Lian, ZD Song - Physical Review B, 2025 - APS
On flat bands of the magic-angle twisted bilayer graphene, exotic correlation physics
unfolds. Phonons, through mediating an effective electron-electron interaction, can play a …

Electron–-phonon interaction in twisted bilayer graphene

CX Liu, Y Chen, A Yazdani, BA Bernevig - Physical Review B, 2024 - APS
We develop an analytic theory to describe the interaction between electrons and K phonons
and study its influence on superconductivity in the bare bands of twisted bilayer graphene …

Evolution from quantum anomalous Hall insulator to heavy-fermion semimetal in magic-angle twisted bilayer graphene

C Huang, X Zhang, G Pan, H Li, K Sun, X Dai, ZY Meng - Physical Review B, 2024 - APS
The ground states of twisted bilayer graphene (TBG) at chiral and flat-band limit with integer
fillings are known from exact solutions, while their dynamical and thermodynamical …

Topological heavy fermions in magnetic field

K Singh, A Chew, J Herzog-Arbeitman… - Nature …, 2024 - nature.com
The recently introduced topological heavy fermion model (THFM) provides a means for
interpreting the low-energy electronic degrees of freedom of the magic angle twisted bilayer …

Scaling theory of intrinsic Kondo and Hund's rule interactions in magic-angle twisted bilayer graphene

YZ Chou, S Das Sarma - Physical Review B, 2023 - APS
Motivated by the recent studies of intrinsic local moments and Kondo-driven phases in
magic-angle twisted bilayer graphene, we investigate the renormalization of Kondo coupling …

Moiré fractional Chern insulators. II. First-principles calculations and continuum models of rhombohedral graphene superlattices

J Herzog-Arbeitman, Y Wang, J Liu, PM Tam, Z Qi… - Physical Review B, 2024 - APS
The experimental discovery of fractional Chern insulators (FCIs) in rhombohedral pentalayer
graphene twisted on hexagonal boron nitride (hBN) has preceded theoretical prediction …

Topological heavy fermion principle for flat (narrow) bands with concentrated quantum geometry

J Herzog-Arbeitman, J Yu, D Călugăru, H Hu… - arxiv preprint arxiv …, 2024 - arxiv.org
We propose a general principle for the low-energy theory of narrow bands with concentrated
Berry curvature and Fubini-Study metric in the form of a map to Anderson-"+" models …