Observation of superconductivity in YBa2Cu3O6CIx
Osipyan Yu. A., Zharikov O. V., Sidorov N. S., Kulakov V. I. , Mogilyanskii D. N., Nikolaev R. K., Shekhtman V. Sh., Volegova O. A., Romanenko I. M.
Ceramic samples with a composition close to YBa2 Cu3 06, having a tetragonal structure and lacking any superconducting transition down to 0.35 K, were heat-treated in gaseous chlorine. The resulting samples turned out to be stable under standard conditions. They exhibited a superconducting transition beginning at 90-92 K, according to a jump in the magnetic susceptibility.