Effective surface impedance of a high-temperature superconducting film in semiconductor plasma substrate at mid-infrared frequency

Chien-Jang Wu, Yao Li Chen, Tzong Jer Yang

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    The effective surface impedance of a high-temperature superconducting thin film on a semiconductor plasma substrate is calculated. Two possible configurations are considered. The first one is a superconducting film deposited on a semi-infinite semiconductor substrate. It is seen that there exists a critical film thickness for the superconductor such that a minimum effective surface resistance is attained. The effective surface resistance is strongly dependent on the high-frequency permittivity of semiconductor plasma. The second will be limited to the more practical case, that is, the semiconductor substrate is of finite thickness. The investigation of substrate resonance in the effective surface resistance shows some fundamental distinctions when a semiconductor plasma substrate is introduced.

    Original languageEnglish
    Pages (from-to)545-550
    Number of pages6
    JournalJournal of Superconductivity and Novel Magnetism
    Issue number4
    Publication statusPublished - 2010 May 1



    • High-temperature superconductors
    • Impedance transform technique
    • Semiconductor plasmas
    • Surface impedance

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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