Toward a global phase diagram of the fractional quantum anomalous Hall effect
Aidan P. Reddy, Liang Fu
Abstract
Recent experiments on $t$MoTe${}_{2}$ provide the first realization of the fractional quantum anomalous Hall effect. Synthesizing insights from an extensive exact diagonalization study, the authors present here a many-body phase diagram $t$MoTe${}_{2}$, in which lowest Landau level (LLL)-like features and non-LLL-like features coexist. The study highlights several guiding principles, including interaction-enhanced particle-hole asymmetry, that is expected to play an important role in general fractional quantum anomalous Hall systems.
Topics & Concepts
Fractional quantum Hall effectQuantum Hall effectPhase diagramPhysicsRealization (probability)AsymmetryLandau quantizationQuantum mechanicsQuantumComposite fermionCondensed matter physicsTheoretical physicsQuantum spin Hall effectPhase (matter)MathematicsElectronStatisticsQuantum and electron transport phenomenaTopological Materials and PhenomenaGraphene research and applications