Tunnel effect in Y–Ba–Cu–O superconducting films
V. M. SvistunovPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, Donetsk 1Š. BeňačkaInstitute of Electrical Engineering, Electrophysical Research Center, Slovak Academy of Sciences, Bratislava 2A. PleceńĭcInstitute of Electrical Engineering, Electrophysical Research Center, Slovak Academy of Sciences, Bratislava 2Š. ChromíkInstitute of Electrical Engineering, Electrophysical Research Center, Slovak Academy of Sciences, Bratislava 2
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Tunnel structures of Pb-YBCO films have been prepared by vacuum evaporation. Resonance-type peculiarities observed in their spectra are apparently due to the decay of Cooper pairs. The energy gap in YBCO films is found to be 2Δ = 31.6−34.2 meV (5.4−5.9 Tc).
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