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POINT-CONTACT TUNNELING INVESTIGATION OF THE SUPERCONDUCTORS IN Y-Ba-Cu-O SYSTEM |
| TAO Hongjie;CHEN Yingfei;LÜ Li;ZHAO Bairu;SHI Yinhuan,
LU Yong;WANG Huisheng;ZHAO Yuying;LI Lin
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| Institute of Physics, Academia Sinica, Beijing |
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| Cite this article: |
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TAO Hongjie, CHEN Yingfei, LÜ et al 1987 Chin. Phys. Lett. 4 481-484 |
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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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Published: 01 November 1987
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