CORRELATION LENGTH OF THE S=2 ANTIFERROMAGNETIC HEISENBERG CHAIN

被引：31

作者：

HATANO, N

SUZUKI, M

机构：

[1] Department of Physics, Faculty of Science, University of Tokyo, Bunkyo-ku

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1993年 / 62卷 / 04期

关键词：

D O I：

10.1143/JPSJ.62.1346

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Temperature dependence of the correlation length of the one-dimensional S=2 Heisenberg antiferromagnet is investigated numerically, to compare with those of the S=1/2, 1, 3/2 models. The correlation length of the S=2 model is found to be saturated to a value xi-1 congruent-to 0.012(2) as T-->0, which confirms the Haldane conjecture. Combined with the estimate xi-1 congruent-to 0.16 of the S=1 model by other authors, the present estimate is well explained by xi-1 is similar to S exp (-piS).

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页码：1346 / 1353

页数：8

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