Electron drag in ferromagnetic structures separated by an insulating interface

We consider electron drag in a system of two ferromagnetic layers separated by an insulating interface. The source of it is expected to be magnon-electron interactions. Namely, we assume that the external voltage is applied to the “active” layer stimulating electric current through this layer. In it...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2018-06, Vol.456, p.257-262
Main Authors: Kozub, V.I., Muradov, M.I., Galperin, Y.M.
Format: Article
Language:English
Subjects:
Drag
Electric currents
Electron scattering
Electrons
Ferromagnetism
Insulation
Magnetic fields
Magnons
Scattering
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Summary:We consider electron drag in a system of two ferromagnetic layers separated by an insulating interface. The source of it is expected to be magnon-electron interactions. Namely, we assume that the external voltage is applied to the “active” layer stimulating electric current through this layer. In its turn, the scattering of the current-carrying electrons by magnons leads to a magnon drag current within this layer. The 3-magnons interactions between magnons in the two layers (being of non-local nature) lead to magnon drag within the “passive” layer which, correspondingly, produce electron drag current via processes of magnon-electron scattering. We estimate the drag current and compare it to the phonon-induced one.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2018.02.047