Uniaxial pressure dependence of the superconducting critical temperature in RBa2Cu3O7−δ high-Tc oxides
S. L. Bud’ko, J. Guimpel, O. Nakamura, M. B. Maple, Ivan K. Schuller
DOI 10.1103/PhysRevB.46.1257 · Physical Review B
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Abstract
We have obtained the three uniaxial-pressure derivatives of the critical temperature, Tc, for GdBa2Cu3O7−δ from the hydrostatic pressure dependence measured on films of different crystalline orientations. The strain derivatives are found to be extremely anisotropic in the a-b plane, inducing a decrease (increase) of Tc when compressing across (along) the CuO chains. A comparison of the results in c-oriented RBa2Cu3O7−δ films and superlattices for various R and substrates reveals a nonmonotonic relation between the critical temperature and pressure.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| GdBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 80 | Pressure unresolved | midpoint |
| GdBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | 2.5 GPa | midpoint |
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