Multiferroic materials based on transition-metal dichalcogenides: Potential platform for reversible control of Dzyaloshinskii-Moriya interaction and skyrmion via electric field

Exploring novel two-dimensional multiferroic materials that can realize\nelectric-field control of two-dimensional magnetism has become an emerging\ntopic in spintronics. Using first-principles calculations, we demonstrate that\nnon-metallic bilayer transition metal dichalcogenides (TMDs) can be an ideal\nplatform for building multiferroics by intercalated magnetic atoms. Moreover,\nwe unveil that with Co intercalated bilayer MoS2, Co(MoS2)2, two energetic\ndegenerate states with opposite chirality of Dzyaloshinskii-Moriya interaction\n(DMI) are the ground states, indicating electric-field control of the chirality\nof topologic magnetism such as skyrmions can be realized in this type of\nmaterials by reversing the electric polarization. These findings pave the way\nfor electric-field control of topological magnetism in two-dimensional\nmultiferroics with intrinsic magnetoelectric coupling.\n