I-V characteristics and the superconducting transition in polycrystalline YBa2Cu3O7−δ
W. M. Tiernan, R. Joshi, R. B. Hallock
DOI 10.1103/PhysRevB.48.3423 · Physical Review B
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Abstract
We report experimental measurements of ρ(T) and χac(T) performed on four polycrystalline sintered YBa2Cu3O7−δ samples that characterize the granular superconducting properties of these samples. We report I-V isotherm measurements near the superconducting transition at selected magnetic fields 0.5≤H≤80.9 G for two of the samples. The observed I-V isotherms are consistent with recent predictions of superconducting I-V scaling, with critical exponents ν≊1.3–1.6 and z≊2.6–3.4.
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. | — | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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