Generic superconducting phase behavior in high-Tc cuprates: Tc variation with hole concentration in YBa2Cu3O7−δ
J. L. Tallon, C. Bernhard, H. Shaked, R. L. Hitterman, J. D. Jorgensen
DOI 10.1103/PhysRevB.51.12911 · Physical Review B
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Abstract
A direct determination of the relationship between Tc and hole concentration p for Y1−xCaxBa2Cu3O7−δ is obtained by investigating the properties of the fully oxygen-deficient (δ≊1.0) compound for which p=x/2. Measurements of Tc, the thermoelectric power S, and bond-valence sums calculated from neutron-diffraction refinements for various values of x and δ allow the full determination of the relations p=p(δ), Tc=Tc(p), and S=S(T,p) confirming that YBa2Cu3O7−δ satisfies the same universal relations in these quantities as the other high-Tc superconducting cuprates.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Y1-xCaxBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 51 | Pressure not reported | onset |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93.5 | Pressure not reported | onset |
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La2-xSrxCaCu2O6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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