Point-contact spectroscopy of superconducting YBaCuO single crystals of tetragonal modification

I. K. Yanson, L. F. Rybal'chenko, V. V. Fisun +3

The point-contact spectra of tetragonal $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{7-\delta }$ with $T_c=50-60K$ are studied at various temperatures. The single-electron energy ($2{\Delta }_0/k{T}_c\simeq 17$) and its tem…