Microwave properties of a composite superconducting structure in the mixed state

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    Abstract

    A theoretical study on microwave properties of a composite layered structure of twin high-Tc superconducting thin-films separated by a nonlinear dielectric is presented. Microwave reflectance and transmittance are calculated within the framework of the self-consistent treatment of vortex dynamics for the superconducting films in the mixed state. The effects of nonlinear field- and temperature-dependent dielectric permittivity of SrTiO3 are specifically discussed. Two significant peaks arising from nonlinearity of the permittivity are found in the temperature-dependent microwave reflectance and transmittance. As for the field-dependent microwave response, we suggest that the strongly field-dependent nonlinear permittivity of SrTiO3 at low temperature does not affect the microwave transmittance and reflectance.

    Original languageEnglish
    Pages (from-to)293-300
    Number of pages8
    JournalPhysica C: Superconductivity and its applications
    Volume305
    Issue number3-4
    DOIs
    Publication statusPublished - 1998 Sep 1

    Keywords

    • Microwave
    • Mixed state
    • Multilayers
    • Penetration depth

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Energy Engineering and Power Technology
    • Electrical and Electronic Engineering

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