Magnon mechanism of Josephson coupling in SFS structures
A. Yu. Zyuzin
TL;DR
This paper demonstrates that electron-magnon interactions enable long-range Josephson coupling in SFS structures, surpassing the limitations of the conventional proximity effect, and provides formulas to estimate the maximum supercurrent based on magnon properties.
Contribution
It introduces a magnon-based mechanism for Josephson coupling in SFS junctions, extending the understanding of long-range superconducting effects.
Findings
Josephson coupling persists at a distance due to electron-magnon interactions
Derived an expression for Josephson energy involving magnon spectrum parameters
Estimated maximum superconducting current based on magnon characteristics
Abstract
It is shown that Josephson coupling in SFS junction due to electron-magnon interaction remains at a distance, when the usual proximity effect decreases exponentially. We obtain expression for the Josephson energy, which contain the parameters of the magnon spectrum and allow to estimate the value of the maximum superconducting current.
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Taxonomy
TopicsPhysics of Superconductivity and Magnetism · Quantum and electron transport phenomena · Organic and Molecular Conductors Research