GROUND-STATE SELECTION IN A KAGOME ANTIFERROMAGNET

被引：36

作者：

HENLEY, CL

CHAN, EP

机构：

[1] Dept. of Physics, Cornell University, Ithaca

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1995年 / 140卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0304-8853(94)00684-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We address selection of a spin-ordered ground state in the quantum Heisenberg nearest-neighbor antiferromagnet with large spin S on the highly frustrated Kagome lattice. By treating the anharmonic terms in the spin-wave expansion, we obtain an effective Hamiltonian bilinear in Ising variables which parametrize the infinity of coplanar classical ground states. This favors 'root 3 X root 3'spin order, in accordance with prior expectations.

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页码：1693 / 1694

页数：2

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