Fig. 5: Fields excited by a point dipole.

a, b Isofrequency curves at ℏω = 0.16 eV for drift velocity u/v = 0.37 and u/v = 0.41 respectively. c, d Fields generated by eq. (3) for isofrequency curves Fig. 5a and b respectively. The solid white inset plots show the field amplitude along the white dashed lines and is normalized to the field at the origin.