SPIN-1/2 HEISENBERG-MODEL ON DELTA-TREES

被引：25

作者：

MONTI, F

SUTO, A

机构：

[1] Institut de Physique Théorique, Ecole Polytechnique Fédérale de Lausanne

来源：

PHYSICS LETTERS A | 1991年 / 156卷 / 3-4期

关键词：

D O I：

10.1016/0375-9601(91)90937-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Anisotropic Heisenberg spin-1/2 antiferromagnets are shown to give an exactly soluble model on triangulated trees. This model has valence bond ground states with a localized spinon. The pair correlations are short-ranged. The infinite volume limit is also investigated in detail. For a chain of triangles there is a spectral gap above the ground state.

引用

页码：197 / 200

页数：4

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