72 citations · 109 across the 13 of their papers we have counts for
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cond-mat.mes-hall2023★ 8 cited
Braiding topology of symmetry-protected degeneracy points in non-Hermitian systems
Jia-Zheng Li, Kai Bai, Cheng Guo +4
Degeneracy points in non-Hermitian systems are of great interest. While a homotopic framework exists for understanding their behavior in the absence of symmetry, it does not apply…
cond-mat.mes-hall2023★ 8 cited
Metallic Quantized Anomalous Hall Effect without Chiral Edge States
Kai-Zhi Bai, Bo Fu, Zhenyu Zhang +1
The quantum anomalous Hall effect (QAHE) is a topological state of matter with a quantized Hall resistance. It has been observed in some two-dimensional insulating materials such a…
cond-mat.mes-hall2023★ 5 cited
Spin-dependent gain and loss in photonic quantum spin Hall systems
Tian-Rui Liu, Kai Bai, Jia-Zheng Li +3
Topological phases are greatly enriched by including non-Hermiticity. While most works focus on the topology of the eigenvalues and eigenstates, how topologically nontrivial non-He…