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

  • Einar Skoglund
  • Maxim A. Tjøtta
  • Sol H. Jacobsen
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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.

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Cite

BibTeXRIS
BibTeX
@misc{skoglund2026eddy,
  title = {{Eddy currents and current reversal in curved magnetic thin-film Josephson junctions}},
  author = {Einar Skoglund and Maxim A. Tjøtta and Sol H. Jacobsen},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2607.16399},
  eprint = {2607.16399},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.16399},
}
RIS
TY  - UNPB
TI  - Eddy currents and current reversal in curved magnetic thin-film Josephson junctions
AU  - Einar Skoglund
AU  - Maxim A. Tjøtta
AU  - Sol H. Jacobsen
PY  - 2026
DA  - 2026/11/03
PB  - arXiv
DO  - 10.48550/arxiv.2607.16399
UR  - https://arxiv.org/abs/2607.16399
AB  - 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.
ER  -