The magnetization plateaus of SrCu2(BO3)2

被引：8

作者：

Miyahara, S ^{[1
]}

Ueda, K ^{[1
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Tokyo 1068666, Japan

来源：

PHYSICA B | 2000年 / 281卷

关键词：

magnetization plateau; SrCu2(BO3)(2); spin gap; Heisenberg model;

D O I：

10.1016/S0921-4526(99)00986-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

SrCu2(BO3)(2) is a unique two-dimensional spin gap system. Furthermore, two magnetization plateaus corresponding to 1/4 and 1/3 of the full Cu moment are observed. We present a theoretical model of these plateaus. In the Heisenberg model for this material tripler excitations are almost localized, which makes them easy to crystallize, leading to the magnetization plateaus. For small magnetization we can map this Heisenberg model to an Ising model and the magnetization curve is calculated. We find 1/2-, 1/3-, 1/4 and 1/8-plateaus. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：661 / 662

页数：2

共 4 条

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[2] Exact dimer ground state and quantized magnetization plateaus in the two-dimemsional spin system SrCu2(BO3)2 [J].

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Miyahara, S ;

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PHYSICAL REVIEW LETTERS, 1999, 82 (18) :3701-3704

[4]

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