Order parameter fluctuation effects in d-wave BCS superconductors

Details Order parameter fluctuation effects in d-wave BCS superconductors Order parameter fluctuation effects in d-wave BCS superconductors

1998-11-04

arxiv.org/abs/cond-mat/9811059v2

Physics

Condensed Matter

Superconductivity

RevTex 4 pages; 4 epsf figures included; Extended discussions and added references

Scientific paper

10.1103/PhysRevB.59.13600

We study order parameter fluctuation effects in the superconducting state as a possible precursor to the pseudogap phenomena. Using a low-energy effective theory in the d-wave BCS model, we self-consistently calculate the single-particle properties. We find that the fluctuations reduce the spectral gap, and the shape of the gap is deformed, showing reduced slope of the gap at the nodes. We also show the angle-dependence of the quasiparticle lifetime due to the fluctuations.

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