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

相关论文

共 27 条

[1] Superconducting, ferromagnetic and antiferromagnetic phases in the t-t′ Hubbard model [J].

Alvarez, JV ;

Gonzalez, J ;

Guinea, F ;

Vozmediano, MAH .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1998, 67 (06) :1868-1871

[2]

DZYALOSHINSKII IE, 1987, JETP LETT+, V46, P118

[3]

DZYALOSHINSKII IE, 1988, ZH EKSP TEOR FIZ, V67, P844

[4] ON THE BROADENING OF LOW DIMENSION VANHOVE SINGULARITIES IN OXIDE SUPERCONDUCTORS [J].

FRIEDEL, J .

JOURNAL DE PHYSIQUE, 1988, 49 (08) :1435-1441

[5] ON QUASI ONE-DIMENSIONAL OR TWO-DIMENSIONAL SUPERCONDUCTORS [J].

FRIEDEL, J .

JOURNAL DE PHYSIQUE, 1987, 48 (10) :1787-1797

[6] Truncation of a two-dimensional Fermi surface due to quasiparticle gap formation at the saddle points [J].

Furukawa, N ;

Rice, TM ;

Salmhofer, M .

PHYSICAL REVIEW LETTERS, 1998, 81 (15) :3195-3198

[7] Band structure and Fermi surface of the (BEDT-TTF)4M[Fe(CN)5NO]2 (M = Na, K, Rb, ...) molecular metals containing the photochromic nitroprusside anion [J].

Gener, M ;

Canadell, E ;

Khasanov, SS ;

Zorina, LV ;

Shibaeva, RP ;

Kushch, LA ;

Yagubskii, EB .

SOLID STATE COMMUNICATIONS, 1999, 111 (06) :329-333

[8] Instability of anisotropic Fermi surfaces in two dimensions [J].

Gonzalez, J ;

Guinea, F ;

Vozmediano, MAH .

PHYSICAL REVIEW LETTERS, 1997, 79 (18) :3514-3517

[9] Renormalization group approach to the normal state of copper-oxide superconductors [J].

Gonzalez, J ;

Guinea, F ;

Vozmediano, MAH .

NUCLEAR PHYSICS B, 1997, 485 (03) :694-724

[10] Renormalization group analysis of electrons near a vanHove singularity [J].

Gonzalez, J ;

Guinea, F ;

Vozmediano, MAH .

EUROPHYSICS LETTERS, 1996, 34 (09) :711-716