Observation of Three-Dimensional Photonic Dirac Points and Spin-Polarized Surface Arcs
Observation of Three-Dimensional Photonic Dirac Points and Spin-Polarized Surface Arcs
Topological phases arise from the elegant mathematical structures imposed by the interplay between symmetry and topology1-5. From gapped topological insulators to gapless semimetals, topological materials in both quantum and classical systems, have grown rapidly in the last decade. Among them, three-dimensional Dirac semimetal lies at the topological phase transition point …