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arXiv · 1701.08293

Point-contact studies of high-temperature superconductor $\rm YBa_2Cu_3O_{7-δ}$

I. K. Yanson·L. F. Rybal'chenko·V. V. Fisun·N. L. Bobrov·V. M. Kirzhner·Yu. D. Tret'yakov·A. R. Kaul'·I. E. Graboi
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Abstract

Point-contacts formed by the high-temperature superconductor $\rm YBa_2Cu_3O_{7-δ}$ prepared by cryochemical technique, and a noble metal Ag or Cu) are investigated. The maximum value of the energy gap $Δ\simeq 40~meV$ and the ratio $2Δ/kT_c\simeq 12$ are obtained. It is found that along certain crystallographic axes of the superconductor under investigation, the electrical resistivity $\lesssim 10^{-5} Ω\cdot cm$.

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I. K. Yanson, L. F. Rybal'chenko, V. V. Fisun, N. L. Bobrov, V. M. Kirzhner, Yu. D. Tret'yakov, A. R. Kaul', I. E. Graboi. 2017-01-28. Point-contact studies of high-temperature superconductor $\rm YBa_2Cu_3O_{7-δ}$. https://arxiv.org/abs/1701.08293

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