Extended quantum anomalous Hall effect in moiré structures: Phase transitions and transport

AS Patri, Z Dong, T Senthil - Physical Review B, 2024 - APS
Recent experiments on multilayer rhombohedral graphene have unearthed a number of
interesting phenomena in the regime where integer and fractional quantum anomalous Hall …

Quantum Geometry in Quantum Materials

J Yu, BA Bernevig, R Queiroz, E Rossi, P Törmä… - arxiv preprint arxiv …, 2024 - arxiv.org
Quantum geometry, characterized by the quantum geometric tensor, is pivotal in diverse
physical phenomena in quantum materials. In condensed matter systems, quantum …

Entropy-enhanced fractional quantum anomalous Hall effect

G Shavit - Physical Review B, 2024 - APS
Strongly interacting electrons in a topologically nontrivial band may form exotic phases of
matter. An especially intriguing example of which is the fractional quantum anomalous Hall …

Edge-driven transition between extended quantum anomalous Hall crystal and fractional Chern insulator in rhombohedral graphene multilayers

Z Wei, AK Wu, M Gonçalves, SZ Lin - Physical Review B, 2025 - APS
Fractional Chern insulators (FCI) with fractionally quantized Hall conductance at fractional
fillings and an extended quantum anomalous Hall (EQAH) crystal with an integer quantized …

New classes of quantum anomalous Hall crystals in multilayer graphene

B Zhou, YH Zhang - arxiv preprint arxiv:2411.04174, 2024 - arxiv.org
The recent experimental observation of quantum anomalous Hall (QAH) effects in the
rhombohedrally stacked pentalayer graphene has motivated theoretical discussions on the …

Wavefunction approach to the fractional anomalous Hall crystal

T Tan, J May-Mann, T Devakul - arxiv preprint arxiv:2409.06775, 2024 - arxiv.org
We propose fractional anomalous Hall crystals (FAHCs) as possible ground states of
strongly interacting electrons in parent bands with Berry curvature. FAHCs are exotic states …

Impurity-induced thermal crossover in fractional Chern insulators

K Huang, SD Sarma, X Li - arxiv preprint arxiv:2409.04349, 2024 - arxiv.org
The recent experimental observation of fractional quantum anomalous Hall (FQAH) states in
rhombohedral multilayer graphene has attracted significant attention. One of the most …

Chiral superconductivity from parent Chern band and its non-Abelian generalization

YQ Wang, ZQ Gao, H Yang - arxiv preprint arxiv:2410.05384, 2024 - arxiv.org
We propose a minimal model starting from a parent Chern band with quartic dispersion that
can describe the spin-valley polarized electrons in rhombohedral tetra-layer graphene. The …