Triplet supercurrent due to spin-active zones in a Josephson junction

Article

关键词: CRITICAL FIELD;    FERROMAGNET;    SUPERCONDUCTIVITY;   

DOI  :  10.1103/PhysRevB.82.020512

来源: SCIE

【 摘 要 】

Motivated by a recent experiment evidencing triplet superconductivity in a ferromagnetic Josephson junction with a Cu(2)MnAl-Heusler barrier, we construct a theoretical model accounting for this observation. The key ingredients in our model which generate the triplet supercurrent are spin-active zones, characterized 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.

【 授权许可】

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