EVIDENCE FOR LONG-RANGE ORDER IN THE HEISENBERG-ANTIFERROMAGNET ON A TRIANGULAR LATTICE

被引：5

作者：

ARNOLD, GB ^{[1
]}

MATA, GJ ^{[1
]}

机构：

[1] UNIV SIMON BOLIVAR,DEPT FIS,CARACAS 1080A,VENEZUELA

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.42.8638

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present the results of effective-cluster calculations of the ground-state energy and average sublattice magnetization of the antiferromagnetic Heisenberg model on a triangular lattice. In these calculations the effective-cluster Hamiltonian consists of three contributions: the Hamiltonian of an isolated cluster with open boundary conditions, the effect of a variational field on the isolated cluster, and the intercluster energy. Extrapolation of the energy computed for clusters with 1, 3, 6, and 10 spins, leads to a ground-state energy E0=-0.57J and an average sublattice magnetization S=0.32. © 1990 The American Physical Society.

引用

页码：8638 / 8639

页数：2

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