35 citations · 101 across the 7 of their papers we have counts for
7 papers
Stochasticity-induced non-Hermitian skin criticality
Xiaoyu Cheng, Hui Jiang, Jun Chen +3
Typically, scaling up the size of a system does not change the shape of its energy spectrum, other than making it denser. Exceptions, however, occur in the new phenomenon of non-He…
Disorder-driven exceptional points and concurrent topological phase transitions in non-Hermitian systems
Xiaoyu Cheng, Tiantao Qu, Yaqing Yang +2
Exceptional points (EPs) are spectral degeneracies unique to non-Hermitian systems which underpin phenomena from enhanced sensing to unconventional topology. While disorder is usua…
Electric field controlled valley-polarized photocurrent switch based on the circular bulk photovoltaic effect
Yaqing Yang, Xiaoyu Cheng, Liantuan Xiao +4
Efficient electric manipulation of valley degrees of freedom is critical and challenging for the advancement of valley-based information science and technology. We put forth an ele…
Topological photonic alloy
Tiantao Qu, Mudi Wang, Xiaoyu Cheng +6
We present the new concept of photonic alloy as a non-periodic topological material. By mixing non-magnetized and magnetized rods in a non-periodic 2D photonic crystal configuratio…
Topological Anderson amorphous insulator
Xiaoyu Cheng, Tiantao Qu, Liantuan Xiao +3
The topological phase in amorphous systems adds a new dimension to the topological states of matter. Here, we present an interesting phenomenon dubbed the topological Anderson amor…
Reentrant quantum spin Hall effect in the presence of an exchange field
Xiaoyu Cheng, Xiaohong Zheng, Jun Chen +3
Driven by various physical origins, the interesting reentrant phenomena in quantum Hall effect (QHE), quantum anomalous Hall effect (QAHE) and non-Hermitian systems have been discu…
Anti-chiral edge states and hinge states based on the Haldane model
Xiaoyu Cheng, Jun Chen, Lei Zhang +2
Different from the chiral edge states, antichiral edge states propagating in the same direction on the opposite edges are theoretically proposed based on the modified Haldane model…