Investigation of coupling between antiferromagnetic and ferroelectric orders in TbMnO$_{3}$ using magnetic field dependent Raman scattering

TbMnO$_{3}$ is an antiferromagnetic insulator with a distorted orthorhombic perovskite structure and a N\'{e}el temperature at T$_{N}$ = 41K. TbMnO$_{3}$ is of particular interest because it is one of the few materials that exhibits not just a co-existence, but a strong coupling between antiferromagnetic and ferroelectric order, as evidenced by a para- to ferro- electric transition below T = 28K. In this talk, we discuss magnetic field dependent Raman scattering measurements of TbMnO$_{3}$ -- both for magnetic fields oriented along various crystallographic directions and as a function of temperature through the ferroelectric and N\'{e}el transitions - the goal of which is to investigate the magnetic-ferroelectric coupling mechanism in this interesting material.