QUANTUM MAGNETISM OF CUGEO3

被引：320

作者：

CASTILLA, G ^{[1
]}

CHAKRAVARTY, S ^{[1
]}

EMERY, VJ ^{[1
]}

机构：

[1] UNIV CALIF LOS ANGELES, DEPT PHYS, LOS ANGELES, CA 90024 USA

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.75.1823

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetic properties of CuGeO3 are shown to be well described by the one-dimensional Heisenberg S = 1/2 model with competing antiferromagnetic interactions. Provided that the competing exchange is moderately large but smaller than the critical value required to produce a gap in the excitation spectrum without lattice dimerization, the model agrees with a variety of experimental properties. It is argued that competing exchange interactions are a general feature of organic charge transfer compounds, and that they increase the temperature at which a spin-Peierls transition takes place.

引用

页码：1823 / 1826

页数：4

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