Observation of one magnon and magnon-phonon-electric dipole coupling in multiferroics bismuth ferrite thin films

摘要

We observed "one magnon," scattering in multiferroic polycrystalline BiFeO_3 thin films near 17.2 cm~(-1) at 90 K employing Raman spectroscopy. It is seen with a kink in magnon intensity at 150 K and with strong anomaly near 210 K illustrating spin reorie