88 citations · 276 across the 18 of their papers we have counts for
18 papers
Time-Reversal Invariant Topological Photonic Alloy
Feng Ruili, Qu Tiantao, Wu Xianbin +4
Conventional approaches generate quantum spin Hall (QSH) and quantum valley Hall (QVH) effects by breaking spatial inversion symmetry across the entire photonic crystal. Consequent…
Fragility of Unidirectional Transport in Weakly Disordered Photonic Chern Insulators
Xiaoxuan Shi, Tiantao Qu, Xianbin Wu +3
Photonic Chern insulators enable unidirectional light transport protected by nontrivial band topology -- essential for robust photonic integrated circuits and error-free communicat…
Magnetic doping-induced second-order and first-order topological phase transition inthe photonic alloy
Xianbin Wu, Tiantao Qu, Xiaoxuan Shi +2
The bulk-edge correspondence principle, a cornerstone of topological physics, ensures that first-order topological systems host robust chiral edge states in two dimension. This was…
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…
Electric-field control of pure spin photocurrent in germanene
Yaqing Yang, Zhen Zhang, Liwen Zhang +4
The electrical control of pure spin current remains a central challenge in spintronics, particularly in time-reversal symmetric systems composed of nonmagnetic elements, where spin…
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…
Light-induced thermal noise \textit{anomaly} governed by quantum metric
Longjun Xiang, Lei Zhang, Jun Chen +3
Traditionally, thermal noise in electric currents, arising from thermal agitation, is expected to increase with temperature and disappear as approaches zero. Contrary to th…
Band alignment effect in the topological photonic alloy
Tiantao Qu, Mudi Wang, Jun Chen +1
Recently, a photonic alloy with non-trivial topological properties has been proposed, based on the random mixing of Yttrium Iron Garnet (YIG) and magnetized YIG rods. When the dopi…
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…
Current-induced near-field radiative energy, linear-momentum, and angular-momentum transfer
Huimin Zhu, Gaomin Tang, Lei Zhang +1
In this paper, we study the near-field radiative energy, linear-momentum, and angular-momentum transfer from a current-biased graphene to nanoparticles. The electric current throug…
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…
The fate of reentrant localization phenomenon in the one-dimensional dimerized quasiperiodic chain with long-range hopping
Haoyu Wang, Xiaohong Zheng, Jun Chen +3
Recently, the exciting reentrant localization transition phenomenon was found in a one-dimensional dimerized lattice with staggered quasiperiodic potentials. Usually, long-range ho…
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…
Photogalvanic effect induced charge and spin photocurrent in group-V monolayer systems
Li-Wen Zhang, Ya-Qing Yang, Jun Chen +1
Photogalvanic effect (PGE) occurs in materials with non-centrosymmetric structures when irradiated by linearly or circularly polarized light. Here, using non-equilibrium Green's fu…
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…
Near-field energy transfer between graphene and magneto-optic media
Gaomin Tang, Lei Zhang, Yong Zhang +2
We consider the near-field radiative energy transfer between two separated parallel plates: graphene supported by a substrate and a magneto-optic medium. We first study the scenari…
Twist-induced control of near-field heat radiation between magnetic Weyl semimetals
Gaomin Tang, Jun Chen, Lei Zhang
Due to the large anomalous Hall effect, magnetic Weyl semimetals can support nonreciprocal surface plasmon polariton modes in the absence of an external magnetic field. This implie…