Triplet supercurrent due to spin-active zones in a Josephson junction
arXiv:1004.5124 · doi:10.1103/PhysRevB.82.020512
Abstract
Motivated by a recent experiment evidencing triplet superconductivity in a ferromagnetic Josephson junction with a CuMnAl-Heusler barrier, we construct a theoretical model accounting for this observation. The key ingredients in our model which generate the triplet supercurrent are \textit{spin-active zones}, characterised by an effective canted interface magnetic moment. Using a numerical solution of the quasiclassical equations of superconductivity with spin-active boundary conditions, we find qualitatively very good agreement with the experimentally observed supercurrent. Further experimental implications of the spin-active zones are discussed.
4 pages, 4 figures. Revised version with additional results. Accepted for publication in PRB Rapid Communications
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- Magnetic-coupling-dependent spin-triplet supercurrents in helimagnet/ferromagnet Josephson junctions
- Spin-polarized Josephson and quasiparticle currents in superconducting spin-filter tunnel junctions
- Inducing odd-frequency triplet superconducting correlations in a normal metal
- Spin-flip scattering and critical currents in ballistic half-metallic d-wave Josephson junctions
- Magnetization induced by odd-frequency spin-triplet Cooper pairs in a Josephson junction with metallic trilayers
- Magnetization Reversal by Tuning Rashba Spin-Orbit Interaction and Josephson Phase in a Ferromagnetic Josephson Junction
- Theoretical study of magnetism induced by proximity effect in a ferromagnetic Josephson junction with a normal metal