Robustness of the Van Hove scenario for high-Tc superconductors

V. Yu Irkhin, A. A. Katanin, M. I. Katnelson

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)

Abstract

A renormalization group (RG) approach that gives a possibility to describe the flattening of the electron spectrum and does not suppose the presence of strong antiferromagnetic fluctuations was developed. As a result of the peculiar structure of the spectrum, the pinning of the Fermi level to Van Hove singularities in 2D systems occurred, the chemical potential being practically constant in a range of dopings near VH filling. In the pinning region, the electron density of states was determined by the quasiparticle damping and the system demonstrated essentially non-Fermi-liquid behavior.

Original languageEnglish
Article number076401
Pages (from-to)076401/1-076401/4
JournalPhysical Review Letters
Volume89
Issue number7
Publication statusPublished - 12 Aug 2002
Externally publishedYes

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