High-field magnetization study of the S=1/2 antiferromagnetic Heisenberg chain Cu(C6H5COO)23H2O

We present a temperature-dependent high-field magnetization study of the S=1/2 antiferromagnetic Heisenberg chain (AFHC) Cu(C6H5COO)2*3H2O along the magnetically characteristic axis a''. The data are analyzed on basis of the Bethe ansatz equations and via exact diagonalization of a linear...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2006-05, Vol.378-380, p.1136-1137
Main Authors: Wolter, A U B, Rakoto, H, Broto, J-M, Honecker, A, Brenig, W, Klumper, A, Klauss, H-H, Litterst, F J, Sullow, S
Format: Article
Language:English
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Summary:We present a temperature-dependent high-field magnetization study of the S=1/2 antiferromagnetic Heisenberg chain (AFHC) Cu(C6H5COO)2*3H2O 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/kB along the chain of 18.8(1)K. We discuss our results in context with the possibility for a magnetocaloric effect during the magnetization process of S=1/2 AFHC systems.
ISSN:0921-4526
DOI:10.1016/j.physb.2006.01.455