Possible observation of cycloidal electromagnons in BiFeO3.

  title={Possible observation of cycloidal electromagnons in BiFeO3.},
  author={Maximilien Cazayous and Yann Gallais and Alain Sacuto and Rog{\'e}rio de Sousa and Delphine Lebeugle and Doroth{\'e}e Colson},
  journal={Physical review letters},
  volume={101 3},
We unravel the magnon spectra of BiFeO3 by means of low-energy inelastic light scattering. We show the existence of two species of magnons corresponding to spin wave excitations in and out of the cycloidal plane. These excitations might be interpreted as electromagnon modes. The present observations present an unique opportunity to study the competition… CONTINUE READING