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Long-range spin-polarized Josephson effect in ballistic S/F/S junctions with precessing magnetization

E. S. Andriyakhina*, M. Mansouri, M. Breitkreiz, and P. W. Brouwer

  • Dahlem Center for Complex Quantum Systems, Fachbereich Physik, and Halle-Berlin-Regensburg Cluster of Excellence CCE, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany

  • *Contact author: e.andriyakhina@fu-berlin.de

Phys. Rev. B 114, 214507 – Published 13 October, 2026

DOI: https://doi.org/10.1103/szjj-cfqw

Abstract

We present a theory of ballistic N/F/S and S/F/S junctions with a uniformly precessing magnetization, which generates long-range equal-spin superconducting correlations [Takahashi et al., Phys. Rev. Lett. 99, 057003 (2007), Houzet, Phys. Rev. Lett. 101, 057009 (2008)]. The nonequilibrium distribution of Andreev bound states leads to a strongly nonsinusoidal current-phase relationship for large precession angles. We derive detailed results for ballistic junctions involving partially and fully polarized ferromagnets. In the fully polarized half-metal limit, the magnetization precession switches the junction from an “off” state with vanishing subgap current to an “on” state with finite Andreev conductance and finite Josephson current.

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