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Issue 6, 2009
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Quantum tunnelling of magnetization in the single-molecule magnet Mn6

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Abstract

We present magnetization measurements of the single-molecule magnet Mn6 revealing various tunnel transitions inconsistent with a giant spin description. We propose a dimeric model of the molecule with two coupled spins S = 6, which involves crystal field anisotropy, symmetric Heisenberg exchange interaction and an antisymmetric Dzyaloshinskii–Moriya exchange interaction. We show that this simplified model of the molecule explains the experimentally observed tunnel transitions and that the antisymmetric exchange interaction between the spins gives rise to tunnelling processes between spin states belonging to different spin multiplets.

Graphical abstract: Quantum tunnelling of magnetization in the single-molecule magnet Mn6

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Publication details

The article was received on 11 Dec 2008, accepted on 25 Feb 2009 and first published on 07 Apr 2009


Article type: Paper
DOI: 10.1039/B822305J
Citation: New J. Chem., 2009,33, 1231-1236
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    Quantum tunnelling of magnetization in the single-molecule magnet Mn6

    S. Bahr, C. J. Milios, L. F. Jones, E. K. Brechin, V. Mosser and W. Wernsdorfer, New J. Chem., 2009, 33, 1231
    DOI: 10.1039/B822305J

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