Kinematics of electrons near a Van Hove singularity

被引：37
|
作者：
González, J
Guinea, F
Vozmediano, MAH
机构：
[1] CSIC, Inst Estructura Mat, Madrid 28006, Spain
[2] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain
[3] Univ Carlos III Madrid, Dept Matemat, Madrid 28913, Spain
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 21期
关键词：
D O I：
10.1103/PhysRevLett.84.4930
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
引用
收藏
页码：4930 / 4933
页数：4
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