Point-contact spectroscopy of the high-temperature superconductor BiSrCaCuO

L. F. Rybal'chenko, V. V. Fisun, N. L. Bobrov +4

The maximum value of the energy gap $\Delta \simeq 8meV$ and the ratio $2\delta /k{T}_c\simeq 2.5$ are determined for a high-temperature superconductor $\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{r}}_2\mathrm{CaC}{\mathrm{u}}_2{\mathrm{O}}_{8+\mathrm{y}}$ by using poi…