High-field magnetization study of the S=1/2 antiferromagnetic Heisenberg chain Cu(C6H5COO)2 • 3H2O

被引：0

作者：

Wolter, A. U. B. ^{[1
]}

Rakoto, H.

Broto, J. -M.

Honecker, A.

Brenig, W.

Kluemper, A.

Klauss, H. -H.

Litterst, F. J.

Suellow, S.

机构：

[1] Tech Univ Braunschweig, Inst Phys Kondensierten Mat, D-38106 Braunschweig, Germany

[2] Lab Nayl Champs Magnet Pulses, F-31432 Toulouse 04, France

[3] Tech Univ Braunschweig, Inst Theoret Phys, D-38106 Braunschweig, Germany

[4] Berg Univ Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany

来源：

PHYSICA B-CONDENSED MATTER | 2006年 / 378-80卷

关键词：

Cu benzoate; pulsed-field magnetization; antiferromagnetic Heisenberg chain;

D O I：

10.1016/j.physb.2006.01.455

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present a temperature-dependent high-field magnetization study of the S = 1/2 antiferromagnetic Heisenberg chain (AFHC) Cu(C6H5COO)(2) (.) 3H(2)O along the magnetically characteristic axis a". The data are analyzed on basis of the Bethe ansatz equations and via exact diagonalization of a linear spin chain with 20 sites. Overall, we find a very good agreement between experimental data and theoretical calculations, and extract a magnetic coupling strength J/k(B) along the chain of 18.8(l) K. We discuss our results in context with the possibility for a magnetocaloric effect during the magnetization process of S = 1/2 AFHC systems. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1136 / 1137

页数：2

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