  Hybrid multiferroic films are fabricated by depositing of Pt/Co/Pt
multilayers onto [001] and [110] cuts of PMN-PT crystal. The dependence of the
interfacial Dzyaloshinskii-Moriya interaction (iDMI) on applied electric field
is experimentally investigated in the system by the Brilloin light scattering
method. A strong variation (from -0.2 to 0.8 mJ/m2) of the iDMI constant is
observed when the electric field is applied. In the case of [001] cut, the
observed changes in the iDMI have an isotropic character, while in the case of
[110] cut they are anisotropic, which corresponds to the symmetry of the PMN-PT
deformations. The change in the iDMI is accompanied by the formation of various
unusual domain structures and skyrmion lattices. External control of the DMI
with an electric field opens the way to manipulate topological magnetic
solitons (such as skyrmions), which are promising objects for information
processing and storage.
