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Article | REF: D2701 V1

Superconductors - Theoretical basis

Authors: Pascal TIXADOR, Yves BRUNET

Publication date: November 10, 2003 | Lire en français

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    1. Critical temperature and resistivity

    The critical temperature (T c ) is the temperature at which the material's electrical resistivity falls below any measurable value (figure 3 ). Paradoxically, the resistivity of the material in its normal state above the critical temperature can be relatively high.

    Example

    for YBaCuO (YBa 2 Cu 3 O 7-δ ), normal-state resistivity reaches 100 to 10,000 times that of copper at 100 K.

    The evolution of resistivity above T...

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