Reduced crystal symmetry as origin of the ferroelectric polarization within the incommensurate magnetic phase of TbMn2O5

N. Narayanan, P. J. Graham, P. Rovillain +9

The precise crystal symmetry and hence the emergence of the electric polarization still remains an open question in the multiferroic materials $R$Mn${}_2$O${}_5$ ($R$ = rare-earth, Bi,…