Structural features of (Ba2Cu2O4+x)/(CaCuO2)n superconducting oxide superlattices with ultrathin individual layers
G. Balestrino, G. Pasquini, A. Tebano
DOI 10.1103/PhysRevB.62.1421 · Physical Review B
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Abstract
The structural disorder in (Ba2Cu2O4+x)/(CaCuO2)n superlattices with ultrathin individual layers consisting of a noninteger number of unit cells is investigated. X-ray diffration and reflection high energy electron diffraction show that a two-dimensional layer by layer growth occurs and that layers of mixed composition are corrugated to adjust the internal stresses. On the basis of these conclusions we can outline an explanation for the behavior of Tc vs n in (Ba2Cu2O4+x)/(CaCuO2)n superlattices.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (Ba2Cu2O4+x)/(CaCuO2)n Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 80 | Pressure not reported | onset |
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