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Pair Phase Fluctuations and the Pseudogap

T. Eckl·D. J. Scalapino·E. Arrigoni·W. Hanke
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Abstract

The single-particle density of states and the tunneling conductance are studied for a two-dimensional BCS-like Hamiltonian with a d_{x^2-y^2}-gap and phase fluctuations. The latter are treated by a classical Monte Carlo simulation of an XY model. Comparison of our results with recent scanning tunneling spectra of Bi-based high-T_c cuprates supports the idea that the pseudogap behavior observed in these experiments can be understood as arising from phase fluctuations of a d_{x^2-y^2} pairing gap whose amplitude forms on an energy scale set by T_c^{MF} well above the actual superconducting transition.

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T. Eckl, D. J. Scalapino, E. Arrigoni, W. Hanke. 2002-10-31. Pair Phase Fluctuations and the Pseudogap. https://doi.org/10.1103/physrevb.66.140510

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