Magnetoelastic instability in the XXZ rings with next-nearest neighbour coupling

被引：0

作者：

李鹏飞 ^{[1
]}

陈中华 ^{[1
]}

机构：

[1] Department of Mathematics and Physics,Shanghai University of Electric Power

来源：

Chinese Physics B | 2010年 / 19卷 / 02期

关键词：

single molecular magnets; anisotropy; magnetoelastic instability;

D O I：

暂无

中图分类号：

O488 [介观物理];

学科分类号：

摘要：

This paper numerically investigates the magnetoelastic instability in the S = 1/2 XXZ rings containing finite spins N with antiferromagnetic nearest-neighbour (NN) and next-nearest neighbour (NNN) coupling. It finds that, as the NN anisotropyΔ1 equals the NNN anisotropyΔ2, there exists a critical NNN coupling strength J2c (≈ 0.5), at which the systems always locate in dimerized phase for arbitrary large spring constant. AsΔ1 = Δ2, the values of J2c are dependent on N and the difference of (Δ1-Δ2).

引用

页码：484 / 487

页数：4

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