Effective Theory of Magnetization Plateaux in the Shastry-Sutherland Lattice

被引：50

作者：

Abendschein, A. ^{[1
,2
]}

Capponi, S. ^{[1
,2
]}

机构：

[1] Univ Toulouse, Phys Theor Lab, UPS, IRSAMC, F-31062 Toulouse, France

[2] CNRS, LPT, IRSAMC, F-31062 Toulouse, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.101.227201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use the nonperturbative Contractor-Renormalization method (CORE) in order to derive an effective model for triplet excitations on the Shastry-Sutherland lattice. For strong enough magnetic fields, various magnetization plateaux are observed, e.g., at 1/8, 1/4, 1/3 of the saturation, as found experimentally in a related compound. Moreover, other stable plateaux are found at 1/9, 1/6, or 2/9. We give a critical review of previous works and try to resolve some apparent inconsistencies between various theoretical approaches.

引用

页数：4

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