The study of spin-spin correlations in quasi-one-dimensional Heisenberg antiferromagnetic clusters

被引：9
|
作者：
Liu, YJ [1 ]
Gong, CD
机构：
[1] Nanjing Univ, Natl Key Lab Solid States Microstruct, Nanjing 210093, Peoples R China
[2] Yangzhou Univ, Complex Sci Ctr, Yangzhou 225002, Peoples R China
[3] CCAST, World Lab, Beijing 100080, Peoples R China
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2002年 / 14卷 / 03期
关键词：
D O I：
10.1088/0953-8984/14/3/317
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
For a class of quasi-one-dimensional clusters, by using exact diagonalization, we study the effect of side spins on the spin-spin correlations on the chain. Our calculations show that side spins added in the same sublattice can effectively strengthen the spin-spin correlations in the large-distance region and make the change tend to flatten. It is exactly proved that periodically adding side spins can set up magnetic long-range order in the ground state. We also investigate the effect of the density of side spins on correlation strength. The case where two sublattices have different localized spins is discussed.
引用
收藏
页码：493 / 498
页数：6
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