Eddy currents and current reversal in curved magnetic thin-film Josephson junctions

Abstract:Real-space geometric curvature in magnetic thin films introduces a controllable mechanism for tailoring the pathways of superconducting steady-state Josephson currents via the proximity effect. We present a generalized Green's function method for calculating diffusive transport in arbitrarily curved surfaces, and show how the competing mechanisms of curvature and distance regulate conversion between different superconducting pairings in a proximity-coupled ferromagnet. We show how this dictates the distribution of current density, with the possibility of curvature-controlled current density manipulation, induced eddy currents and current reversal.

Superconductivity (cond-mat.supr-con); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Quantum Physics (quant-ph)

arXiv:2607.16399 [cond-mat.supr-con]

(or arXiv:2607.16399v1 [cond-mat.supr-con] for this version)

https://doi.org/10.48550/arXiv.2607.16399 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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