Models of the Pseudogap State in Cuprates

Details Models of the Pseudogap State in Cuprates Models of the Pseudogap State in Cuprates

1999-12-17

arxiv.org/abs/cond-mat/9912318v1

Physica C341-348 (2000) 811

Physics

Condensed Matter

Superconductivity

M2S-HTCS-VI Conference Paper, 4 pages, 4 figures, using Elsevier style espcrc2.sty

Scientific paper

We review a certain class of ("nearly") exactly solvable models of electronic spectrum of two-dimensional systems with fluctuations of short range order of "dielectric" (e.g. antiferromagnetic) or "superconducting" type, leading to the formation of anisotropic pseudogap state on certain parts of the Fermi surface. The models are based on recurrence procedure for one- and two-electron Green's functions which takes into account of all Feynman diagrams in perturbation series with the use of the approximate Ansatz for higher-order terms in this series. These models can be applied to calculation of spectral density, density of states and conductivity in the normal state, as well as to calculation of some properties of superconducting state.

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