Antiferromagnetic spin pumping via hyperfine interaction

Spin pumping is an interfacial spin current generation from the ferromagnetic layer to non-magnetic metal at its interface. The polarization of pumped $$\mathbf {J}_s \propto \mathbf {m}\times \dot{\mathbf {m}}$$ depends on dynamics magnetic moment {m}$$ . When materials are based light transition metals, mechanism behind transfer dominated by exchange interaction between localized d-electrons and itinerant conduction electrons. In heavier however, not limited interaction. electron can interact nuclear means hyperfine interaction, as observed in shift NMR frequency. By studying metallic due a $$\mathbf{I}$$ layer, we show that mediate pumping. shown have similar form $${J}_s\propto {I}\times {I}}$$