4 papers · 1 filter
Tracking Intrinsic Non-Hermitian Skin Effect in Lossy Lattices
Liwei Xiong, Qicheng Zhang, Xiling Feng +4
Non-Hermitian skin effect (NHSE), characterized by a majority of eigenstates localized at open boundaries, is one of the most iconic phenomena in non-Hermitian lattices. Despite no…
Discovery of Higher-Order Nodal Surface Semimetals
Huahui Qiu, Yuzeng Li, Qicheng Zhang +1
The emergent higher-order topological insulators significantly deepen our understanding of topological physics. Recently, the study has been extended to topological semimetals feat…
Observation of Hybrid-Order Topological Pump in a Kekule-Textured Graphene Lattice
Tianzhi Xia, Yuzeng Li, Qicheng Zhang +3
Thouless charge pumping protocol provides an effective route for realizing topological particle transport. To date, the first-order and higher-order topological pumps, exhibiting t…
Acoustic realization of projective mirror Chern insulators
Tianzi Li, Luohong Liu, Qicheng Zhang +1
Symmetry plays a key role in classifying topological phases. Recent theory shows that in the presence of gauge fields, the algebraic structure of crystalline symmetries needs to be…