Direct Observation of Long-Term Durability of Superconductivity in YBa${}_2$Cu${}_3$O${}_7$-Ag${}_2$O Composites

Juhn-Jong Lin, Yong-Han Lin, Shiu-Ming Huang +2

We report direct observation of long-term durability of superconductivity of several YBa${}_2$Cu${}_3$O${}_7$-Ag${}_2$O composites that were first prepared and studied almost 14 years ago…