Evidence for possible stable superconductivity at 500 K
A. Erbil, A. C. Wright, E. P. Boyd
DOI 10.1103/PhysRevB.37.555 · Physical Review B
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Abstract
A stable and reproducible resistive transition with onset at about 550 K has been observed in a new Y-Ba-Cu-O compound system and attributed to a transition to a possible superconducting state. The possibility of superconductivity has been indicated by the observation of (i) a dc Josephson-like effect up to 390 K which is quenched in a high external magnetic field and (ii) a marked reduction in the onset temperature with increasing bias current density. Both observations are consistent with granular superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 95 | Pressure not reported | zero_resistance |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 160 | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 240 | Pressure not reported | unknown |
| YBa2Cu3O5F2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 260 | Pressure not reported | onset |
| YBa2Cu3O5F2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
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