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Renormalization group analysis of electrons near a Van Hove singularity.

J. Gonzalez·F. Guinea·M. A. H. Vozmediano
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Abstract

A model of interacting two dimensional electrons near a Van Hove singularity is studied, using renormalization group techniques. In hole doped systems, the chemical potential is found to be pinned near the singularity, when the electron-electron interactions are repulsive. The RG treatment of the leading divergences appearing in perturbation theory give rise to marginal behavior and anisotropic superconductivity.

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J. Gonzalez, F. Guinea, M. A. H. Vozmediano. 1995-02-24. Renormalization group analysis of electrons near a Van Hove singularity.. https://doi.org/10.1209/epl%2Fi1996-00519-4

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