Physical Review Letters · 1987 · 61 citations · 3 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsMaterials PhysicsSolid State PhysicsElectrical ConductivityMagnetic OxidesMagnetic Properties Of SolidsMagnetism In SolidsStrongly Correlated Electron SystemsSuperconducting MaterialsCuprate SuperconductorsElectrical Resistance MeasurementHigh-temperature SuperconductivityHigh-temperature SuperconductorsMutual InductanceSuperconducting Critical TemperatureSuperconducting Phase TransitionsSuperconducting Properties
Superconducting onsets near 90 K are observed in multiphase samples with nominal composition ${\mathrm{Lu}}_{1.8}$${\mathrm{Ba}}_{0.2}$${\mathrm{CuO}}_{4}$. Results of electrical resistance, mutual inductance, and dc magnetization measurements are reported. Magnitude of superconducting transitions indicates that about 2% of the best sample is superconducting.
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