Observation of Higher-Order Nodal-Line Semimetal in Phononic Crystals
Higher-order topological insulators and semimetals, which generalize the conventional bulk-
boundary correspondence, have attracted extensive research interest. Among them, higher …
boundary correspondence, have attracted extensive research interest. Among them, higher …
Acoustic Klein bottle insulator
Internal and crystalline symmetries play critical roles in the classification of topological
materials. Recently, the crystalline symmetries are found to allow projective representations …
materials. Recently, the crystalline symmetries are found to allow projective representations …
Brillouin Klein space and half-turn space in three-dimensional acoustic crystals
The Bloch band theory and Brillouin zone (BZ) that characterize wave-like behaviors in
periodic mediums are two cornerstones of contemporary physics, ranging from condensed …
periodic mediums are two cornerstones of contemporary physics, ranging from condensed …
Discovery of Higher-Order Nodal Surface Semimetals
The emergent higher-order topological insulators significantly deepen our understanding of
topological physics. Recently, the study has been extended to topological semimetals …
topological physics. Recently, the study has been extended to topological semimetals …
Real-projective-plane hybrid-order topological insulator realized in phononic crystals
The manifold of the fundamental domain of the Brillouin zone is always considered to be a
torus. However, under the synthetic gauge field, the Brillouin manifold can be modified by …
torus. However, under the synthetic gauge field, the Brillouin manifold can be modified by …
Realization of a three-dimensional photonic higher-order topological insulator
The discovery of photonic higher-order topological insulators (HOTIs) has significantly
expanded our understanding of band topology and provided unprecedented lower …
expanded our understanding of band topology and provided unprecedented lower …