Coexistence of the superconducting energy gap and pseudogap above and below the transition temperature of cuprate superconductors
J. L. Tallon, F. Barber, J. G. Storey, J. W. Loram
DOI 10.1103/PhysRevB.87.140508 · Physical Review B
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Abstract
We express the superconducting gap Δ(T) in terms of thermodynamic functions in both s- and d-wave symmetries. Applying to Bi2Sr2CaCu2O8+δ and Y0.8Ca0.2Ba2Cu3O7−δ we find that for all dopings Δ(T) persists, as a partial gap, high above Tc due to strong superconducting fluctuations. Therefore in general two gaps are present above Tc, the superconducting gap and the pseudogap, effectively reconciling two highly polarized views concerning pseudogap physics.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Y0.8Ca0.2Ba2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Y0.8Ca0.2Ba2Cu3O6.75 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Y1-xCaxBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7-δ 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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