Project Details

The project aims at experimentally proving several predicted, mutually interrelated ultrafast magnetic effects in crystals under THz irradiation. This includes the phonomagnetic theory stating that THz pumping of phonons in CeCl3 should induce giant magnetic fields of up to 100 Tesla and a record Zeeman splitting of phonons by up to 0.5 THz. In several targeted mixed orthoferrite crystals, we will search for expected new multiferroic phases at low temperatures featuring electromagnons and exhibiting directional dichroism. In other carefully selected mixed orthoferrite crystals, we will pump phonons with intense THz radiation in order to detect changes in the magnetic and/or crystal structure induced by the nonlinear phonon coupling. We will also focus on the search for new multiferroics with strong magnetoelectric coupling, including mechanically strained BaFe12O19 thin films. We will also study spin excitations in microwave and THz region.