Flux creep in the critical state of a high-temperature superconductor
I. A. Campbell, L. Fruchter, R. Cabanel
DOI 10.1103/PhysRevLett.64.1561 · Physical Review Letters
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Abstract
We have measured the field and temperature dependences of the logarithmic flux-creep relaxation in an oriented-grain sample of YBaCuO in the critical state. The data indicate that the effective activation energy U0 increases continuously with increasing T between 6 and 30 K, and that U0(T) tends to increase rather than decrease with increasing applied field. These results are compared to predictions of the thermally activated flux-creep model.
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. | 91 | Pressure not reported | onset |
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