A NEW INTEGRABLE 2-PARAMETER MODEL OF STRONGLY CORRELATED ELECTRONS IN ONE-DIMENSION

被引：67

作者：

BARIEV, RZ ^{[1
]}

KLUMPER, A ^{[1
]}

ZITTARTZ, J ^{[1
]}

机构：

[1] Russian Acad Sci, Kazan Physicotech Inst, Kazan 420029, RUSSIA

来源：

EUROPHYSICS LETTERS | 1995年 / 32卷 / 01期

关键词：

D O I：

10.1209/0295-5075/32/1/015

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new one-dimensional fermion model depending on two independent interaction parameters is formulated and solved exactly by the Bethe-ansatz method. The Hamiltonian of the model contains the Hubbard interaction and correlated hopping as well as pair hopping terms. The density-density and pair correlations are calculated which manifest superconducting properties in certain regimes of the phase diagram.

引用

页码：85 / 90

页数：6

共 25 条

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