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

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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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