Recent advances in 2D, 3D and higher-order topological photonics
Over the past decade, topology has emerged as a major branch in broad areas of physics,
from atomic lattices to condensed matter. In particular, topology has received significant …
from atomic lattices to condensed matter. In particular, topology has received significant …
Topological carbon materials: A new perspective
Carbon has numerous one-dimensional (1D), two-dimensional (2D), and three-dimensional
(3D) allotropic structures. The study of carbon materials has long been a major focus of …
(3D) allotropic structures. The study of carbon materials has long been a major focus of …
Band Topology and Linking Structure of Nodal Line Semimetals with Monopole Charges
We study the band topology and the associated linking structure of topological semimetals
with nodal lines carrying Z 2 monopole charges, which can be realized in three-dimensional …
with nodal lines carrying Z 2 monopole charges, which can be realized in three-dimensional …
Observation of non-Abelian nodal links in photonics
In crystals, two bands may cross each other and form degeneracies along a closed loop in
the three-dimensional momentum space, which is called nodal line. Nodal line degeneracy …
the three-dimensional momentum space, which is called nodal line. Nodal line degeneracy …
Coexistence of symmetry-enforced phononic Dirac nodal-line net and three-nodal surfaces phonons in solid-state materials: Theory and materials realization
In this study, using symmetry analysis, we reveal that symmetry-enforced three-nodal
surfaces (NSs) and Dirac nodal-line (DNL) net phonons can coexist in two candidate space …
surfaces (NSs) and Dirac nodal-line (DNL) net phonons can coexist in two candidate space …
Non-Abelian topology of nodal-line rings in -symmetric systems
Nodal lines inside the momentum space of three-dimensional crystalline solids are
topologically stabilized by a π flux of Berry phase. Nodal-line rings in PT-symmetric systems …
topologically stabilized by a π flux of Berry phase. Nodal-line rings in PT-symmetric systems …
Symmetry-enforced band crossings in tetragonal materials: Dirac and Weyl degeneracies on points, lines, and planes
We study the occurrence of symmetry-enforced topological band crossings in tetragonal
crystals with strong spin-orbit coupling and time-reversal symmetry. By computing the …
crystals with strong spin-orbit coupling and time-reversal symmetry. By computing the …
Degenerate topological line surface phonons in quasi-1D double helix crystal SnIP
Degenerate points/lines in the band structures of crystals have become a staple of the
growing number of topological materials. The bulk-boundary correspondence provides a …
growing number of topological materials. The bulk-boundary correspondence provides a …
Observation of hourglass nodal lines in photonics
Nodal line semimetals exhibiting line degeneracies in three-dimensional momentum space
have been demonstrated recently. In general, the presence of nodal line semimetals is …
have been demonstrated recently. In general, the presence of nodal line semimetals is …
Realization of symmetry-enforced two-dimensional dirac fermions in nonsymmorphic α-bismuthene
Two-dimensional (2D) Dirac-like electron gases have attracted tremendous research
interest ever since the discovery of free-standing graphene. The linear energy dispersion …
interest ever since the discovery of free-standing graphene. The linear energy dispersion …