Correlation functions in the three-chain Hubbard ladder

被引：30

作者：

Kimura, T

Kuroki, K

Aoki, H

机构：

[1] Department of Physics, University of Tokyo, Tokyo 113, Hongo

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.54.R9608

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to check whether odd-numbered Tomonaga-Luttinger ladders are dominated by antiferromagnetic correlations associated with gapless spin excitations, correlation functions of the doped three-chain Hubbard model are obtained with the bosonization at the renormalization-group fixed point. The correlation of thr singlet superconducting pairing across the central and edge chains is found to be dominant, reflecting two gapful spin modes, while the intraedge spin-density-wave correlation, reflecting the gapless mode, is only subdominant. This implies that, when there are multiple spin modes, a dominant superconductivity can arise from the presence of some spin gap(s) despite the coexistence of power-law correlated spins.

引用

页码：R9608 / R9611

页数：4

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