Curvature-induced long-range supercurrents in diffusive superconductor-ferromagnet-superconductor Josephson junctions with a dynamic 0−π transition
Tancredi Salamone, Mathias B. M. Svendsen, Morten Amundsen, Sol Jacobsen
DOI 10.1103/PhysRevB.104.L060505 · Physical Review B
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Abstract
We report that spin supercurrents can be induced in diffusive superconductor-ferromagnet-superconductor Josephson junctions without any magnetic misalignment or intrinsic spin-orbit coupling. Instead, the pathway to spin-triplet generation is provided via geometric curvature, and results in a long-range Josephson effect. In addition, the curvature is shown to induce a dynamically tunable 0−π transition in the junction. We provide the analytic framework and discuss potential experimental and innovation implications.
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