In situ electric-field control of THz nonreciprocal directional dichroism in the multiferroic Ba2CoGe2O7Vít, J.; Viirok, Johan; Peedu, Laur; Rõõm, Toomas; Nagel, Urmas; Kocsis, V.; Tokunaga, Y.; Taguchi, Y.; Tokura, Y.; Kezsmarki, I.; Balla, P.; Penc, K.; Romhanyi, J.; Bordacs, S.Physical review letters2021 / art. 157201, 6 p. : ill https://doi.org/10.1103/PhysRevLett.127.157201