Pseudogap Phase in High- Tc Superconductors
P. Devillard, J. Ranninger
DOI 10.1103/PhysRevLett.84.5200 · Physical Review Letters
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Abstract
We describe the approach of the superconducting state as a sequence of crossover phenomena. As the temperature is decreased, uncorrelated pairing of the electrons leads to the opening of a pseudogap at TF*. Upon further lowering the temperature those electron pairs acquire well behaved itinerant features at TB*, leading to partial Meissner screening and Drude-type behavior of the optical conductivity. Further decrease of the temperature leads to their condensation and superconductivity at Tc. The analysis is done on the basis of the boson-fermion model in the crossover regime between 2D and 3D.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBCO 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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