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POINT-CONTACT TUNNELING INVESTIGATION OF THE SUPERCONDUCTORS IN Y-Ba-Cu-O SYSTEM

  • Institute of Physics, Academia Sinica, Beijing

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  • Published Date: October 31, 1987
    Abstract
  • Point-contact tunneling measurements of the oxide superconductor Y-Ba-Cu-O were carried out with both Nb and Mo tips. An energy gap, Δ=18.5meV and 2Δ/kTc=4.7 were obtained. The result is consistent with the strong-coupling theory. The tunneling conductance curves indicate a granular feature of the sample.
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