Accurate Determination of 2eh in Y-Ba-Cu-O Josephson Junctions
Thomas J. Witt
DOI 10.1103/PhysRevLett.61.1423 · Physical Review Letters
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Abstract
Accurate measurements of 2eh by means of the ac Josephson effect have been carried out by the use of weak links of a high-Tc superconductor, Y-Ba-Cu-O, of macroscopic dimensions. The result, 2eh=483595.0±1.7 GHz/V, differs, in relative value, from that obtained by accurate measurements in metallic superconductors by 5.6 × 10−6.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBaCuO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | onset |
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