Order-parameter fluctuation effects in d-wave BCS superconductors

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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.

Original languageEnglish (US)
Pages (from-to)13600-13603
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number21
StatePublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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