Origin of the variation of Tc with superconducting layer thickness and separation in YBa2Cu3O7−x/PrBa2Cu3O7 superlattices
R. G. Goodrich, P. W. Adams, D. H. Lowndes, D. P. Norton
DOI 10.1103/PhysRevB.56.R14299 · Physical Review B
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Abstract
We have investigated the superconducting (SC) properties of ultra-thin YBa2Cu3O7−x layers in YBa2Cu3O7−x/PrBa2Cu3O7 superlattices in which the coupling between adjacent YBa2Cu3O7−x layers is modulated by varying thicknesses of insulating PrBa2Cu3O7. In particular, we have formulated a phenomenological model that accounts for the dependence of the YBa2Cu3O7−x transition temperature on both the thickness of and the separation between YBa2Cu3O7−x layers. The results of our analysis are compared with previous studies of conventional low-Tc thin film systems.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure not reported | zero_resistance |
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| MoC Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Mo79Ge21 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.4 | Pressure not reported | unknown |
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