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Magnon mediated electric current drag across a ferromagnetic insulator layer
Steven S-L Zhang1, Shufeng Zhang
1Department of Physics, University of Arizona, Tucson, Arizona 85721, USA.
Abstract:
In a semiconductor heterostructure, the Coulomb interaction is responsible for the electric current drag between two 2D electron gases across an electron impenetrable insulator. For two metallic layers separated by a ferromagnetic insulator (FI) layer, the electric current drag can be mediated by a nonequilibrium magnon current of the FI. We determine the drag current by using the semiclassical Boltzmann approach with proper boundary conditions of electrons and magnons at the metal-FI interface.
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