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Long-Range Superharmonic Josephson Current

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arxiv 1101.5416 v2 pith:DXUDNHXF submitted 2011-01-27 cond-mat.supr-con

Luka Trifunovic This is my paper · ORCID
classification cond-mat.supr-con
keywords textitcooperlong-rangepairsregionspin-activesuperharmonicwhen
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abstract

We consider a long superconductor-ferromagnet-superconductor junction with one spin-active region. It is shown that an \textit{odd} number of Cooper pairs cannot have a long-range propagation when there is \textit{only one} spin-active region. When temperature is much lower than the Thouless energy, the coherent transport of \textit{two} Cooper pairs becomes dominant process and the \textit{superharmonic} current-phase relation is obtained ($I\propto\sin2\phi$).

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  1. Quantized resonant tunneling effect in Josephson junctions with ferromagnetic bilayers

    cond-mat.supr-con 2025-04 conditional novelty 6.0 of 10

    In 1D SF1F2S Josephson junctions, a barrier at the F1/F2 interface creates critical-current resonance peaks at Q_i d_i = (n_i + 1/2)π, attributed to zero-spin-projection triplet pairs, with accumulated phase setting t...

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