Magnetoresistance and the effect of superconducting fluctuationsin YBa2Cu3O7/PrBa2Cu3O7 superlattices
W. Volz, F. S. Razavi, G. Quirion, H.-U. Habermeier, A. L. Solovjov
DOI 10.1103/PhysRevB.55.6631 · Physical Review B
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Abstract
The results of the magnetoresistance on two thin-film samples of YBa2Cu3O7/PrBa2Cu3O7 superlattices have been reported for the temperatures near and below the superconducting transition temperature. The thermally activated flux-creep motion theory was used to describe the magnetoresistance results at temperatures much lower than Tc. The existence of the superconducting fluctuation near Tc as well as the two-dimensional behavior of superlattices were studied by comparing the magnetoresistance results and Larkin's quasi-two-dimensional (2D) superconducting fluctuation theory. A good fit between experimental results and theory was obtained and contrary to previous results, no crossover between quasi-2D and 3D was observed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 86 | Pressure unresolved | onset |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 83 | Pressure unresolved | onset |
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