# Quantum Anomalous Hall Effect from Inverted Charge Transfer Gap

@article{Devakul2021QuantumAH, title={Quantum Anomalous Hall Effect from Inverted Charge Transfer Gap}, author={Trithep Devakul and Liang Fu}, journal={Physical Review X}, year={2021} }

A general mechanism is presented by which topological physics arises in strongly correlated systems without ﬂat bands. Starting from a charge transfer insulator, topology emerges when the charge transfer energy between the cation and anion is reduced to invert the lower Hubbard band and the spin-degenerate charge transfer band. A universal low-energy theory is developed for the inversion of charge transfer gap in a quantum antiferromagnet. The inverted state is found to be a quantum anomalous…

## 10 Citations

### Theory of quantum anomalous Hall effect and electric-field-induced phase transition in AB-stacked MoTe2/WSe2 moiré heterobilayers

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### Symmetric Wannier states and tight-binding model for quantum spin Hall bands in AB-stacked MoTe$_2$/WSe$_2$

- Physics
- 2022

Motivated by the observation of topological states in AB-stacked MoTe 2 /WSe 2 , we construct the symmetry-adapted Wannier states and tight-binding model for the quantum spin Hall bands in this…

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### Topological Phases in AB-Stacked MoTe_{2}/WSe_{2}: Z_{2} Topological Insulators, Chern Insulators, and Topological Charge Density Waves.

- PhysicsPhysical review letters
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### Topological $p_x+ip_y$ inter-valley coherent state in Moir\'e MoTe$_2$/WSe$_2$ heterobilayers

- Physics
- 2022

Recently, a quantum anomalous Hall (QAH) state was observed in AB stacked moir´e MoTe 2 /WSe 2 heterobilayers at half-ﬁlling. More recent layer-resolved magnetic circular dichroism (MCD) measurements…

### Quantum anomalous Hall effect and electric-field-induced topological phase transition in AB-stacked MoTe${}_2$/WSe${}_2$ moir\'e heterobilayers

- Physics
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We propose a new mechanism to explain the quantum anomalous Hall (QAH) eﬀect and the electric-ﬁeld-induced topological phase transition in AB-stacked MoTe 2 /WSe 2 moir´e heterobilayers at ν = 1 hole…

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