Raman evidence for Orbiton-Mediated Multiphonon Scattering in Multiferroic TbMnO${}_3$

Pradeep Kumar, Surajit Saha, D. V. S. Muthu +3

Temperature-dependent Raman spectra of TbMnO${}_3$ from 5 K to 300 K in the spectral range of 200 to 1525 cm${}^{-1}$ show five first-order Raman allowed modes and two high frequency m…