Phase diagram of magnetic ladders constructed from a composite-spin model

被引：27

作者：

Legeza, O

Fath, G

Solyom, J

机构：

[1] TECH UNIV BUDAPEST, H-1521 BUDAPEST, HUNGARY

[2] UNIV LAUSANNE, INST THEORET PHYS, CH-1015 LAUSANNE, SWITZERLAND

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.55.291

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

White's density matrix renormalization group method has been applied to an S = 1/2 + 1/2 composite-spin model, which can also be considered as a two-leg ladder model. By appropriate choices of the coupling constants this model allows one not only to study how the gap is opened around the gapless integrable models, but also to interpolate continuously between models with different spin lengths. We have found indications for the existence of several different massive phases.

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页码：291 / 298

页数：8

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