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  • 1
    Electronic Resource
    Electronic Resource
    T c trend in high-T c superconductors (1992)
    Springer
    Journal of superconductivity 5 (1992), S. 153-158 
    Details
    ISSN: 1572-9605
    Keywords: Superconductor-semiconductor composite ; proximity effect ; size quantization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract In our previous works, we have shown that most existing ceramic superconductors can be considered to be built of superconductor-semiconductor composite and we have estimated the change in phonon spectrum of the intrinsic superconductor unit if a semiconductor unit is attached to it. Moreover, the proximity effect under the size quantization condition has been examined in the superconductor-semiconductor composite. Each of the stated effects by itself could causeT c enhancement in general as more semiconductor blocks are added to the system. We extend our study in this paper to analyze the combined actions of phonon spectral change and proximity effect without size quantization condition onT c variation in members of the Tl1 series of high-T c superconductors. Our results indicate that an optimumT c is obtained if the stated effects are included in the idealized unit cells of the superconductors made up of a superconductor-semiconductor array.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00618060
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    T c enhancement in superconductor-semiconductor arrays (1991)
    Springer
    Journal of superconductivity 4 (1991), S. 461-467 
    Details
    ISSN: 1572-9605
    Keywords: High-T c superconductors ; size quantization ; superconductor-semiconductor arrays
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Subsequent to our observation that the Tl- and Bi-based cuprate high-T c superconductors are built of superconductor-semiconductor arrays (P. C. W. Fung and W. Y. Kwok,J. Superconduct., this issue), we investigate in this paper the possibility ofT c enhancement arising from the effect of change of phonon spectrum and the effect of size quantization when one or more semiconductor blocks is attached to the basic superconductor in the unit cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00635865
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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