title: Probing states with macroscopic circulations in magnetic photonic crystals.
abstract: We predict that when light is reflected off a magnetic photonic crystal (MPC) there is a grazing component that is parallel to the surface; the magnitude of this component can be changed by an external field. The direction of this parallel component is reversed as the direction of the magnetization is reversed. This provides a way to probe states with macroscopic circulations inside the MPC.
authors: Bartol Research Institute, University of Delaware, Newark, DE 19716, USA.
authors: S T
authors: ST
authors: Chui
authors: Z F
authors: ZF
authors: Lin