Ac Josephson current and supercurrent noise through one-dimensional correlated electron systems

Nobuhiko Yokoshi, Susumu Kurihara

    研究成果: Article

    1 引用 (Scopus)

    抜粋

    ac Josephson effect in one-dimensional Tomonaga-Luttinger liquid (TLL) adiabatically connected to superconducting electrodes is theoretically investigated. It is found that density fluctuations due to repulsive electron-electron interactions in TLL inhibit Josephson oscillations, whereas they do not affect time-independent current part. We also show that the fluctuations reduce supercurrent noise caused by multiple Andreev reflections. This indicates that the quantum fluctuations in TLL disturb the superconducting phase coherence spreading across the junction.

    元の言語English
    記事番号144509
    ジャーナルPhysical Review B - Condensed Matter and Materials Physics
    76
    発行部数14
    DOI
    出版物ステータスPublished - 2007 10 23

    ASJC Scopus subject areas

    • Condensed Matter Physics

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