Topological phases of matter have revolutionised the fundamental understanding of band
theory and hold great promise for next-generation technologies such as low-power …

Spin–orbit coupling, a fundamental mechanism underlying topological insulators, has been
introduced to construct the latter's photonic analogs, or photonic topological insulators …

The theory of the orbital Hall effect (OHE), a transverse flow of orbital angular momentum
(OAM) in response to an electric field, has concentrated on intrinsic mechanisms. Here …

We propose an unconventional bulk-edge correspondence for two-dimensional Stiefel-
Whitney insulators and Euler insulators, which are topological insulators protected by the PT …

The investigation of orbital angular momentum (OAM) of delocalised Bloch electrons has
advanced our understanding of magnetic, transport, and optical phenomena in crystals …

The topological classification of gapped band structures depends on the particular definition
of topological equivalence. For translation-invariant systems, stable equivalence is defined …

Classical-wave topological materials lacking intrinsic half-integer spins are less robust while
more tunable. Here, we explore a single 3-dimensional phononic topological crystalline …

The investigation of orbital angular momentum (OAM) of delocalised Bloch electrons has
significantly advanced our understanding of magnetic, transport, and optical phenomena in …

Topological insulators, which are insulating in the bulk and conducting on the surface, have
attracted great interest in recent years. The recently discovered topological surface and …

Bulk-boundary correspondence (BBC) of symmetry-protected topological (SPT) phases
relates the nontrivial topological invariant of the bulk to the number of topologically protected …