  We consider the radiation of angular momentum (AM) from current-carrying
molecular junctions. Using the nonequilibrium Green's function method, we
derive a convenient formula for the AM radiation and apply it to a prototypical
benzene molecule junction. We discuss the selection rules for inelastic
transitions between the molecular angular momentum eigenstates due to a 6-fold
rotational symmetry. Our study provides important insights into the generation
of light with AM from DC-biased molecular junctions.
