Akimenko, A.I.; Gudimenko, V.A.
(Физика низких температур, 2008)
When the dx₂₋y₂ -wave pairing is suppressed by Zn-doping in YBa₂Cu₃O₇₋δ some of the Andreev reflection
spectra were found to be similar to the s-wave spectra of conventional superconductors. The energy
gap is rather ...