Low-temperature properties of the spin-1 antiferromagnetic Heisenberg chain with bond alternation

被引：36

作者：

Kohno, M

Takahashi, M

Hagiwara, M

机构：

[1] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 106, Japan

[2] RIKEN, Inst Phys & Chem Res, Wako, Saitama 35101, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.57.1046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the low-temperature properties of the spin-1 antiferromagnetic Heisenberg chain with bond alternation by the quantum Monte Carlo method (loop algorithm). The strength of bond alternation at the gapless point is estimated as delta(c) = 0.2595 +/- 0.0005. We confirm numerically that the low-temperature properties at the gapless point are consistent with held-theoretical predictions, The numerical results are compared with those of the spin-1/2 antiferromagnetic Heisenberg chain and recent experimental results for [{Ni(333-tet)(mu-N-3)}(n)](ClO4)(n) [333-tet=tetraamine N,N'-bis(3-aminopropyl)-1,3-propanediamine].

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页码：1046 / 1051

页数：6

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