POINT-CONTACT TUNNELING INVESTIGATION OF THE SUPERCONDUCTORS IN Y-Ba-Cu-O SYSTEM
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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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TAO Hongjie, CHEN Yingfei, LÜ Li, ZHAO Bairu, SHI Yinhuan, LU Yong, WANG Huisheng, ZHAO Yuying, LI Lin. POINT-CONTACT TUNNELING INVESTIGATION OF THE SUPERCONDUCTORS IN Y-Ba-Cu-O SYSTEM[J]. Chin. Phys. Lett., 1987, 4(11): 481-484.
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TAO Hongjie, CHEN Yingfei, LÜ Li, ZHAO Bairu, SHI Yinhuan, LU Yong, WANG Huisheng, ZHAO Yuying, LI Lin. POINT-CONTACT TUNNELING INVESTIGATION OF THE SUPERCONDUCTORS IN Y-Ba-Cu-O SYSTEM[J]. Chin. Phys. Lett., 1987, 4(11): 481-484.
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TAO Hongjie, CHEN Yingfei, LÜ Li, ZHAO Bairu, SHI Yinhuan, LU Yong, WANG Huisheng, ZHAO Yuying, LI Lin. POINT-CONTACT TUNNELING INVESTIGATION OF THE SUPERCONDUCTORS IN Y-Ba-Cu-O SYSTEM[J]. Chin. Phys. Lett., 1987, 4(11): 481-484.
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TAO Hongjie, CHEN Yingfei, LÜ Li, ZHAO Bairu, SHI Yinhuan, LU Yong, WANG Huisheng, ZHAO Yuying, LI Lin. POINT-CONTACT TUNNELING INVESTIGATION OF THE SUPERCONDUCTORS IN Y-Ba-Cu-O SYSTEM[J]. Chin. Phys. Lett., 1987, 4(11): 481-484.
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