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The Electrodynamics of Granular High-Temperature Superconducting Media

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Abstract

The electrodynamic properties of granular high-temperature superconducting media are studied. Relations for the surface resistance and impedance of a high-temperature superconducting medium are derived. The temperature and frequency dependence of the phase velocity and group velocity and depth of penetration of the electromagnetic field into the Josephson medium are calculated. The possibility of using high-temperature superconducting films as high-efficiency shields is shown. The shielding properties are improved appreciably with increase in the critical current density of the high-temperature superconducting film. The shield thickness is several microns or several fractions of a micron for a critical current density of >107 A/m2. The results obtained can be used in designing superhigh-frequency shields, microstrip lines, and other devices based on high-temperature superconducting Josephson media.

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  1. Tomsk State University of Control Systems and Radioelectronics, Russia

    V. A. Krakovskii

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  1. V. A. Krakovskii
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Krakovskii, V.A. The Electrodynamics of Granular High-Temperature Superconducting Media. Russian Physics Journal 45, 947–954 (2002). https://doi.org/10.1023/A:1022802614536

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