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  • 1
    Electronic Resource
    Electronic Resource
    Thermal Transport in BPSCCO System Between 20 and 170 K (2000)
    Springer
    Journal of superconductivity 13 (2000), S. 617-621 
    Details
    ISSN: 1572-9605
    Keywords: thermal conductivity ; (Bi,Pb) 2223 pellet ; thermal conductivity peak ; phonon + electron approach
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Thermal conductivity of superconducting (Bi,Pb)2223 pellet in the temperature range 20–170 K is reported. Electronic contribution to thermal conductivity in the normal state is estimated to be ∼25%. Considering both phonon and phonon + electron approach, we attempted to examine the observed nature of the temperature dependence of thermal conductivity. Our analysis strongly supports the role of phonons as well as electrons in the origin of the thermal conductivity peak in the superconducting state. Some of the microscopic quantities evaluated from the best-fit parameters obtained from phonon + electron approach give reasonable values.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007837220525
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Thermoelectric Power of Deoxygenated Bi1.6Pb0.4Sr2Ca2Cu3O10 + δ Sintered Superconducting Pellets (1998)
    Springer
    Journal of superconductivity 11 (1998), S. 367-372 
    Details
    ISSN: 1572-9605
    Keywords: Thermoelectric power ; electrical resistivity ; high-T c superconductors ; deoxygenation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The thermal variation of the electrical resistivity and thermoelectric power of Bi1.6Pb0.4Sr2Ca2Cu3O10 + δ pellets subjected to various degrees of deoxygenation is reported. The temperature dependence of the electrical resistivities of deoxygenated samples displays gradual transformation from metallic-like to semiconductor-like features in the normal state. All the samples however, show superconducting transition, but increasing deoxygenation depresses T C0 from 102 to 45 K. Gross features of the temperature variation of thermoelectric power observed in properly oxygenated (Bi, Pb)-2223 cuprates are retained in all the deoxygenated samples. Our results on electrical resistivity and thermoelectric power in the normal state have been found to be consistent with a two-band model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022602931513
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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