Exact diagonalization provides evidence that the antiferromagnetic Chern insulator phase with quantized Chern number C=1 exists in the Kane-Mele-Hubbard model, shown by gap closing, anisotropic spin correlations, fidelity susceptibility, and a modified Chern number calculation that accounts for TRS-
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The second plateau at about 3/5 the first in 3D QHE arises from spin-density-wave order induced by nesting between spin-up and spin-down Landau bands after a Lifshitz transition.
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The antiferromagnetic Chern insulator phase in the Kane-Mele-Hubbard model
Exact diagonalization provides evidence that the antiferromagnetic Chern insulator phase with quantized Chern number C=1 exists in the Kane-Mele-Hubbard model, shown by gap closing, anisotropic spin correlations, fidelity susceptibility, and a modified Chern number calculation that accounts for TRS-
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3D Quantum Hall Effect with Two Distinct Plateaus
The second plateau at about 3/5 the first in 3D QHE arises from spin-density-wave order induced by nesting between spin-up and spin-down Landau bands after a Lifshitz transition.
- Covariant formulation of the Berry connection in non-Hermitian systems