Special Issue: Topological Photonic StatesNo Access
PHOTONIC DIRAC CONES REALIZED BY ACCIDENTAL DEGENERACY ON THE BRILLOUIN-ZONE BOUNDARY
https://doi.org/10.1142/S0217979214410082Cited by:8 (Source: Crossref)
Abstract
The condition for the formation of Dirac cones at arbitrary points in the Brillouin zone by the accidental degeneracy of two photonic bands was examined by the degenerate perturbation theory and group theory based on the spatial symmetry of two modes. The analysis was applied to a two-dimensional square-lattice photonic crystal with C4v symmetry and the dispersion relation in the vicinity of the M point was examined. Exact agreement between the analytical and numerical calculation was obtained.
PACS: 42.70.Qs, 78.67.Pt
| You currently do not have access to the full text article. |
|---|
