Ginzburg-Landau Expansion in a Toy Model of Superconductor with Pseudogap

Details Ginzburg-Landau Expansion in a Toy Model of Superconductor with Pseudogap Ginzburg-Landau Expansion in a Toy Model of Superconductor with Pseudogap

1998-06-16

arxiv.org/abs/cond-mat/9806199v6

JETP 88 (1999) 347

Physics

Condensed Matter

Superconductivity

14 pages, 14 figures, RevTeX 3.0, Postscript figures attached, some changes in the explanation of the model, published in JETP

Scientific paper

10.1134/1.558803

We propose a toy model of electronic spectrum of two-dimensional system with
``hot-patches'' on the Fermi surface, which leads to essential renormalization
of spectral density (pseudogap). Within this model we derive Ginzburg-Landau
expansion for both s-wave and d-wave Cooper pairing and analyze the influence
of pseudogap formation on the basic properties of superconductors.

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