PAIRING CORRELATIONS IN THE 2-DIMENSIONAL HUBBARD-MODEL

被引：52

作者：

MOREO, A ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.45.5059

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using the quantum Monte Carlo method, we study several pairing correlations for the two-dimensional Hubbard model away from half filling. We analyze how the behavior of the correlations as a function of distance affects the existence of long-range order in momentum space. We found that in all channels the correlation length is of the order of one lattice spacing. Thus, we conclude that any enhancement of the correlations observed in momentum space is a short-distance effect.

引用

页码：5059 / 5061

页数：3

共 18 条

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