The Magnetoelastic Distortion of Multiferroic BiFeO${}_3$ in the Canted Antiferromagnetic State

Toomas Rõõm, Johan Viirok, Laur Peedu +17

Using THz spectroscopy, we show that the spin-wave spectrum of multiferroic BiFeO${}_3$ in its high-field canted antiferromagnetic state is well described by a spin model that violat…