Reversible Magnetoelectric Control of THz Polarization Rotation in Magnetostrictive Spintronic Emitters on PMN-PT

We demonstrate an efficient voltage control of the polarization in Spin-tronic Terahertz Emitters, by combining a spin pumping multilayer with strong magnetic anisotropy and magnetoelastic properties, and a piezoelectric substrate to obtain a reversible 70° THz polarization rotation by sweeping the applied voltage on the substrate over 400V.