Properties of electrons near a Van Hove singularity

Details Properties of electrons near a Van Hove singularity Properties of electrons near a Van Hove singularity

2002-04-11

arxiv.org/abs/cond-mat/0204257v1

Journal of Physics and Chemistry of Solids 63, 2295 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

Proceedings of SNS-01 to appear in the Journal of Physics and Chemistry of Solids, SNS-01

Scientific paper

10.1016/S0022-3697(02)00230-5

The Fermi surface of most hole-doped cuprates is close to a Van Hove singularity at the M point. A two-dimensional electronic system, whose Fermi surface is close to a Van Hove singularity shows a variety of weak coupling instabilities. It is a convenient model to study the interplay between antiferromagnetism and anisotropic superconductivity. The renormalization group approach is reviewed with emphasis on the underlying physical processes. General properties of the phase diagram and possible deformations of the Fermi surface due to the Van Hove proximity are described.

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