On the pseudogap phase in high-T_c superconductors

P. Devillard; J. Ranninger

doi:10.1103/physrevlett.84.5200

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arXiv · cond-mat/0003378

On the pseudogap phase in high-T_c superconductors

P. Devillard·J. Ranninger

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Abstract

We describe the approach of the superconducting state as a sequence of cross-over phenomena. As the temperature is decreased, uncorrelated pairing of the electrons leads to the opening of a pseudogap at T_F^*. Upon further lowering the temperature those electron pairs acquire well behaved itinerant features at T_B^*, 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 T_c. The analysis is done on the basis of the Boson-Fermion model in the cross-over regime between 2D and 3D.

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P. Devillard, J. Ranninger. 2000-03-23. On the pseudogap phase in high-T_c superconductors. https://doi.org/10.1103/physrevlett.84.5200

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