Journal of Experimental and Theoretical Physics
HOME | SEARCH | AUTHORS | HELP      
Journal Issues
Golden Pages
About This journal
Aims and Scope
Editorial Board
Manuscript Submission
Guidelines for Authors
Manuscript Status
Contacts


ZhETF, Vol. 130, No. 3, p. 477 (September 2006)
(English translation - JETP, Vol. 103, No. 3, p. 415, September 2006 available online at www.springer.com )

NON-FERMI-LIQUID BEHAVIOR IN THE FLUCTUATING GAP MODEL: FROM THE POLE TO A ZERO OF THE GREEN'S FUNCTION
Kuchinskii E.Z., Sadovskii M.V.

Received: February 17, 2006

PACS: 71.10.Hf, 71.27.+a, 74.72.-h

DJVU (212.8K) PDF (501.8K)

We analyze the non-Fermi-liquid (NFL) behavior of the fluctuating gap model (FGM) of pseudogap behavior in both one and two dimensions. A detailed discussion of the quasiparticle renormalization (Z-factor) is given, demonstrating a kind of ``marginal'' Fermi-liquid or Luttinger-liquid behavior and topological stability of the ``bare'' Fermi surface (the Luttinger theorem). In the two-dimensional case, we discuss the effective picture of the Fermi surface ``destruction'' both in ``hot spot'' model of dielectric (AFM, CDW) pseudogap fluctuations and for the qualitatively different case of superconducting d-wave fluctuations, reflecting the NFL spectral density behavior and similar to that observed in ARPES experiments on copper oxides.

 
Report problems