Magnon drag in a metal–insulating antiferromagnet bilayer

We study a bilayer structure consisting of an antiferromagnetic insulator and normal metal. An electron current is driven in the metal with direction parallel to interface between materials. Due interfacial exchange coupling localized spins antiferromagnet itinerant electrons metal, magnon can then be induced antiferromagnet. Using uncompensated interface, creating asymmetry two degenerate modes, we find that it possible generate spin current. The enhanced by increasing temperature or spin-splitting modes.