Ontology highlight
ABSTRACT:
SUBMITTER: Liu GG
PROVIDER: S-EPMC7171084 | biostudies-literature | 2020 Apr
REPOSITORIES: biostudies-literature
Liu Gui-Geng GG Zhou Peiheng P Yang Yihao Y Xue Haoran H Ren Xin X Lin Xiao X Sun Hong-Xiang HX Bi Lei L Chong Yidong Y Zhang Baile B
Nature communications 20200420 1
At photonic Dirac points, electromagnetic waves are governed by the same equations as two-component massless relativistic fermions. However, photonic Dirac points are known to occur in pairs in "photonic graphene" and other similar photonic crystals, which necessitates special precautions to excite only one valley state. Systems hosting unpaired photonic Dirac points are significantly harder to realize, as they require broken time-reversal symmetry. Here, we report on the observation of an unpai ...[more]