Fig. 4: Comparison of photocurrent generation efficiency.
From: Terahertz photon to dc current conversion via magnetic excitations of multiferroics
The Glass coefficient in multiferroics; electromagnon (red), AFMR (blue), and electronic transition (dark green) in EYMO, electromagnon in TbMnO3 (light green, Supplementary Fig. 4). The error bars for the electromagnons (EYMO and TbMnO3) and for the phonon (BaTiO3) represent the bandwidth of the excitation terahertz pulse of the corresponding experiments. The Glass coefficient in various polar and ferroelectric materials are obtained from refs. 27,28,37,38,39,40,41,42.
