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Kinematics of electrons near a van hove singularity.

作者信息

Gonzalez J, Guinea F, Vozmediano MA

机构信息

Instituto de Estructura de la Materia, Consejo Superior de Investigaciones Cientificas, Serrano 123, 28006 Madrid, Spain.

出版信息

Phys Rev Lett. 2000 May 22;84(21):4930-3. doi: 10.1103/PhysRevLett.84.4930.

DOI:10.1103/PhysRevLett.84.4930
PMID:10990834
Abstract

A two-dimensional electronic system, where the 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. We present a detailed analysis of the kinematics of electron scattering in this model. The similarities and differences between a standard renormalization group approach and previous work based on parquet summations of log (2) divergences are analyzed, with emphasis on the underlying physical processes. General properties of the phase diagram are discussed.

摘要

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