Resistance noise in high-Tc and low-Tc granular superconducting films
J. M. Aponte, A. Bellorín, R. Oentrich, J. van der Kuur, G. Gutiérrez, M. Octavio
DOI 10.1103/PhysRevB.47.8964 · Physical Review B
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Abstract
Measurements of the resistance noise in thick films of Y-Ba-Cu-O, in thick films of Bi-Sr-Ca-Cu-O, and in thin films of NbN, at the superconducting transition are reported. The transition to the R=0 state was obtained by either changing the temperature at fixed currents or by lowering the current through the sample at fixed temperatures. In both kinds of experiments, we have observed the divergence of the power spectral density Sv/V2 as the R=0 state is approached. Our results are consistent with a percolative interpretation of the resistive transition of granular superconductors.
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 |
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| NbN 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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