Physical Review Letters
Superconductivity at 93 K in a new mixed-phase Y-Ba-Cu-O compound system at ambient pressure
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A stable and reproducible superconductivity transition between 80 and 93 K has been unambiguously observed both resistively and magnetically in a new Y-Ba-Cu-O compound system at ambient pressure. An estimated upper critical field ${\mathrm{H}}_{\mathrm{c}2}$(0) between 80 and 180 T was obtained.
DOI: 10.1103/physrevlett.58.908 · Publisher: American Physical Society (APS)