Field induced crossover in antiferromagnetic spin-frustrated clusters: Influence of static and dynamic structural deformations

Tarantul A, Tsukerblat B, Müller A (2008)
JOURNAL OF MOLECULAR STRUCTURE 890(1-3): 170-177.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor/in
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Abstract / Bemerkung
We propose a theoretical study of the magnetic behavior of spin frustrated trinuclear clusters in the region of the field induced crossover of the levels which are crucial for the description of the static magnetization and dynamic behavior in a sweeping field. The emphasis is made on a competitive role of the antisymmetric (AS) exchange and static structural distortions of the metal center network as well as on the consequences of the dynamic pseudo Jahn-Teller (JT) instability that is closely related to spin frustration. The structural conformations are shown to be controlled by the magnetic field in the anticrossing region (magnetoelastic coupling). We employ the three-spin model for the cluster anion present in K-6[(V15As6O42)-As-IV(H2O)] center dot 8H(2)O (V-15 cluster) and analyze the role of different components of AS exchange in the shape of the magnetic susceptibility vs field. Both types of deformations (static and dynamic) are shown to be competitive to the AS exchange and tend to reduce the magnetic anisotropy caused by the AS exchange. (c) 2008 Elsevier B.V. All rights reserved.
Stichworte
Antisymmetric exchange; Magnetic; anisotropy; Spin frustration; Jahn-Teller effect; Molecular magnets; V-15 cluster
Erscheinungsjahr
2008
Zeitschriftentitel
JOURNAL OF MOLECULAR STRUCTURE
Band
890
Ausgabe
1-3
Seite(n)
170-177
ISSN
0022-2860
Page URI
https://pub.uni-bielefeld.de/record/1636669

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Tarantul A, Tsukerblat B, Müller A. Field induced crossover in antiferromagnetic spin-frustrated clusters: Influence of static and dynamic structural deformations. JOURNAL OF MOLECULAR STRUCTURE. 2008;890(1-3):170-177.
Tarantul, A., Tsukerblat, B., & Müller, A. (2008). Field induced crossover in antiferromagnetic spin-frustrated clusters: Influence of static and dynamic structural deformations. JOURNAL OF MOLECULAR STRUCTURE, 890(1-3), 170-177. doi:10.1016/j.molstruc.2008.04.045
Tarantul, A., Tsukerblat, B., and Müller, A. (2008). Field induced crossover in antiferromagnetic spin-frustrated clusters: Influence of static and dynamic structural deformations. JOURNAL OF MOLECULAR STRUCTURE 890, 170-177.
Tarantul, A., Tsukerblat, B., & Müller, A., 2008. Field induced crossover in antiferromagnetic spin-frustrated clusters: Influence of static and dynamic structural deformations. JOURNAL OF MOLECULAR STRUCTURE, 890(1-3), p 170-177.
A. Tarantul, B. Tsukerblat, and A. Müller, “Field induced crossover in antiferromagnetic spin-frustrated clusters: Influence of static and dynamic structural deformations”, JOURNAL OF MOLECULAR STRUCTURE, vol. 890, 2008, pp. 170-177.
Tarantul, A., Tsukerblat, B., Müller, A.: Field induced crossover in antiferromagnetic spin-frustrated clusters: Influence of static and dynamic structural deformations. JOURNAL OF MOLECULAR STRUCTURE. 890, 170-177 (2008).
Tarantul, Alex, Tsukerblat, Boris, and Müller, Achim. “Field induced crossover in antiferromagnetic spin-frustrated clusters: Influence of static and dynamic structural deformations”. JOURNAL OF MOLECULAR STRUCTURE 890.1-3 (2008): 170-177.