Observation of the reverse ac Josephson effect in Y-Ba-Cu-O at 240 K.

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 superconductivitySolid-state physicsPi Josephson junctionMaterials scienceJosephson effectCondensed matter physicsSuperconductivityAtomic electron transitionInorganic compoundElectrical 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.

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