Thermodynamic fluctuations in the superconductor Y1Ba2Cu3O9−δ: Evidence for three-dimensional superconductivity
P. P. Freitas, C. C. Tsuei, T. S. Plaskett
DOI 10.1103/PhysRevB.36.833 · Physical Review B
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Abstract
The rounding of resistivity near and above the superconductivity transition temperature Tc, observed in the Y1Ba2Cu3O9−δ superconductor, is found to be a manifestation of thermodynamic fluctuations. A quantitative agreement between the experiment and the three-dimensional (3D) Aslamazov-Larkin theory was achieved near Tc Low-field measurements of the excess diamagnetism are also in agreement with the 3D theory of Prange. These results strongly suggest that superconductivity in high-Tc copper oxides (Y1Ba2Cu3O9−δ) is basically 3D in nature.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Y1Ba2Cu3O9-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure not reported | midpoint |
| Y1Ba2Cu3O9-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure not reported | midpoint |
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