Pressure studies on the pseudogap and critical temperatures of a high-Tc superconductor
E. V. L. de Mello, M. T. D. Orlando, J. L. González, E. S. Caixeiro, E. Baggio-Saitovich
DOI 10.1103/PhysRevB.66.092504 · Physical Review B
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Abstract
We report simultaneous hydrostatic pressure studies on the critical temperature Tc and on the pseudogap temperature T* performed through resistivity measurements on an optimally doped high-Tc oxide Hg0.82Re0.18Ba2Ca2Cu3O8+δ. The resistivity is measured as a function of the temperature for several different applied pressures around 1 GPa. We find that T* increases linearly with the pressure at a larger rate than Tc. This result demonstrates that the well known intrinsic pressure effect on Tc is more important at the pair formation temperature T*.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Hg0.82Re0.18Ba2Ca2Cu3O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 131.5 | Pressure unresolved | midpoint |
| Hg0.82Re0.18Ba2Ca2Cu3O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 132 | Pressure unresolved | midpoint |
| Hg0.82Re0.18Ba2Ca2Cu3O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 133.3 | 1.23 GPa | midpoint |
| Hg0.82Re0.18Ba2Ca2Cu3O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 135.2 | 1.23 GPa | midpoint |
| HoBa2Cu4O8 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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