QUASI-PARTICLE DISPERSION OF THE 2D HUBBARD-MODEL - FROM AN INSULATOR TO A METAL

被引：189

作者：

PREUSS, R ^{[1
]}

HANKE, W ^{[1
]}

VONDERLINDEN, W ^{[1
]}

机构：

[1] MAX PLANCK INST PLASMA PHYS,EURATOM ASSOC,D-85740 GARCHING,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.75.1344

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

On the basis of quantum Monte Carlo results the evolution of the spectral weight A(k, omega) of the two-dimensional Hubbard model is studied from insulating to metallic behavior. As observed in recent photoemission experiments for cuprates, the electronic excitations display essentially doping-independent features; a quasiparticlelike dispersive narrow band of width of the order of the exchange interaction J and a broad valence- and conduction-band background. The continuous evolution is traced back to one and the same many-body origin: the doping-dependent antiferromagnetic spin-spin correlation.

引用

页码：1344 / 1347

页数：4

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