Heteroepitaxial growth of strained multilayer superconducting thin films of Nd1.83Ce0.17CuOx/YBa2Cu3O7−δ
A. Gupta, R. Gross, E. Olsson, A. Segmüller, G. Koren, C. C. Tsuei
DOI 10.1103/PhysRevLett.64.3191 · Physical Review Letters
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Abstract
Heteroepitaxial growth of strained multilayer thin films of YBa2Cu3O7−δ/Nd1.83Ce0.17CuOx by pulsed-laser deposition is reported. The coherency strain results in biaxial compression of the tetragonal Nd1.83Ce0.17CuOx layers, whereas the biaxial tension in the YBa2Cu3O7−δ layers removes the orthorhombic distortion and makes the unit cell isotropic in the basal plane (a=b). Depending on their oxygen content, either the YBa2Cu3O7−δ or the Nd1.83Ce0.17CuOx layers are superconducting in these multilayers. The strain-induced structural modification has a significant influence on the superconducting transition temperature of the YBa2Cu3O7−δ layers.
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. | 92.5 | Pressure unresolved | zero_resistance |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89 | Pressure not reported | zero_resistance |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 84 | Pressure not reported | zero_resistance |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | zero_resistance |
| Nd1.83Ce0.17CuOx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10 | Pressure not reported | onset |
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