Point-contact studies of high-temperature superconductor $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{7-\delta }$

I. K. Yanson, L. F. Rybal'chenko, V. V. Fisun +5

Point-contacts formed by the high-temperature superconductor $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{7-\delta }$ prepared by cryochemical technique, and a noble metal Ag or Cu) are investigated. The maximum va…