Investigation of the energy gap of Y-Ba-Cu-O by point-contact Josephson-junction techniques
A. Barone, A. Di Chiara, G. Peluso, U. Scotti di Uccio, A. M. Cucolo, R. Vaglio, F. C. Matacotta, E. Olzi
DOI 10.1103/PhysRevB.36.7121 · Physical Review B
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Abstract
Experimental results on stable point-contact Nb/Y-Ba-Cu-O structures are reported. Reproducible current-voltage characteristics showing Josephson coupling are obtained. Measurements of dVdI give an estimate for the energy-gap value of the high-Tc superconductor Y-Ba-Cu-O Δ=19.5±2.0 mV, corresponding to a ratio [2Δ(0)kBTc]=4.8 in agreement with previous results obtained by a different technique.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92.4 | Pressure not reported | unknown |
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