Strong spintronic magnetoelectric effect in layered magnetic metamaterial

It is shown that external magnetic field or magnetization induces electric polarization of microscopic isolated magnetic/non-magnetic hybrid structures due to the spin-dependent electron redistribution and mutual capacity. The magnetoelectric effect can be very strong, for instance the change of electric polarization reaches 100 μC/m2 at a constant magnetic field of only 1.5 T in the case of 100 ÷ 10 nm structures which tightly fill the space, composing a metamaterial. The effect does not require using exotic compounds. Based on the obtained results we suggest a number of recommendations for future experimental design.