Tunneling magnon flow across the terminated ferromagnetic chain

A mechanism is proposed for transferring magnon energy from one ferromagnet to another by tunneling magnons through a bridging ferromagnetic wire that connects ferromagnets. In the framework of the model of Bose gas for the magnons, expressions are found for the power of the transferred magnon energ...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2020-08, Vol.46 (8), p.836-840
Main Author: Petrov, E. G.
Format: Article
Language:English
Subjects:
Anisotropy
Ferromagnetism
Magnons
Wire
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Summary:A mechanism is proposed for transferring magnon energy from one ferromagnet to another by tunneling magnons through a bridging ferromagnetic wire that connects ferromagnets. In the framework of the model of Bose gas for the magnons, expressions are found for the power of the transferred magnon energy from a ferromagnet having a higher temperature to a colder ferromagnet. It is shown how the efficiency of tunneling transport depends on the parameters of exchange interactions in the “ferromagnet-wire-ferromagnet” system, the single-ion anisotropy of the structural units of the system, and the magnetic field. As an example, the role of single-ion anisotropy in the formation of resonant and non-resonant transmission of magnons between ferromagnets and adjacent wire terminal units is shown, which accordingly significantly enhances or weakens the tunneling flow of magnons from one ferromagnet to another.
ISSN:1063-777X
1090-6517
DOI:10.1063/10.0001551