Structural evidence against current-induced destruction of charge-ordering in manganese oxides

High-resolution x-ray scattering, in the presence of an applied current, has been used for studying the stability of the charge ordered phase of manganese oxides upon current biasing. We find that the charge ordered structure is unchanged when a current is flowing in the sample. Such a result indicates that the non-linear conduction observed in charge ordered manganites can not be ascribed to a current-induced destabilisation of charge ordering.