Cherenkov Radiation in a Bianisotropic Medium with Magnetoelectric Effect

Cherenkov radiation is studied analytically in a dispersive bianisotropic medium with magnetoelectric effect. This study is based on the vector-potential approach. Notable features such as double cones of Cherenkov radiation in magnetoelectric media are studied and the angle of propagation cones are calculated, which allow for characterizing magnetoelectric materials. We also analyze emitted electromagnetic fields in the spectral domain to obtain radiated power and momentum-resolved electron energy-loss spectra. The impact of magnetoelectric coefficients on characteristics of the Cherenkov radiation is also investigated in order to introduce parameters for the characterization of magnetoelectric materials