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Many-Spin Interactions and Spin Excitations in Mn12

M. I. Katsnelson·V. V. Dobrovitski·B. N. Harmon
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Abstract

In this work, the many-spin interactions taking place in Mn12 large-spin clusters are extensively studied using the 8-spin model Hamiltonian, for which we determine the possible parameters based on experimental data. Account of the many-spin excitations satisfactorily explains positions of the neutron scattering peaks, results of EPR measurements and the temperature dependence of magnetic susceptibility. In particular, strong Dzyaloshinsky-Morya interactions are found to be important for description of neutron scattering data. The role of these interactions for the relaxation of the magnetization is qualitatively discussed.

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M. I. Katsnelson, V. V. Dobrovitski, B. N. Harmon. 1998-07-13. Many-Spin Interactions and Spin Excitations in Mn12. https://doi.org/10.1103/physrevb.59.6919

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