作者: J. T. Chen , L. E. Wenger , C. J. McEwan , E. M. Logothetis
DOI: 10.1103/PHYSREVLETT.58.1972
关键词: High-temperature superconductivity 、 Solid-state physics 、 Pi Josephson junction 、 Materials science 、 Josephson effect 、 Condensed matter physics 、 Superconductivity 、 Atomic electron transition 、 Inorganic compound 、 Electrical resistivity and conductivity
摘要: A two-step resistive transition, one beginning at 240 K and the other 90 K, has been observed in Y-Ba-Cu-O compounds. The superconductivity, possibly granular form, both temperatures verified by means of rf-to-dc conversion associated with ac Josephson effect.