Abstract

An apparent superconducting transition with an onset temperature above 40 K has been detected under pressures in the La-Ba-Cu-O compound system synthesized directly from a solid-state reaction of ${\mathrm{La}}_{2}$${\mathrm{O}}_{3}$, CuO, and ${\mathrm{BaCO}}_{3}$ followed by a decomposition of the mixture in a reduced atmosphere. The experiment is described and the results of effects of magnetic field and pressure are discussed.

Keywords

SuperconductivityMaterials scienceSuperconducting transition temperatureDecompositionCondensed matter physicsTransition temperatureAnalytical Chemistry (journal)PhysicsChemistry

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R. J. Cava , R. B. van Dover , B. Batlogg +1 more

We report the results of resistivity and magnetic susceptibility measurements in ${\mathrm{La}}_{2\mathrm{\ensuremath{-}}\mathrm{x}}$${\mathrm{Sr}}_{\mathrm{x}}$${\mathrm{CuO}}_...

1987 Physical Review Letters 1033 citations

Publication Info

Year
1987
Type
article
Volume
58
Issue
4
Pages
405-407
Citations
1490
Access
Closed

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Cite This

C. W. Chu, P. H. Hor, R. L. Meng et al. (1987). Evidence for superconductivity above 40 K in the La-Ba-Cu-O compound system. Physical Review Letters , 58 (4) , 405-407. https://doi.org/10.1103/physrevlett.58.405

Identifiers

DOI
10.1103/physrevlett.58.405