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Microscopic origin of the adiabatic change of magnetization in molecular magnets

H. De Raedt·S. Miyashita·K. Michielsen·M. Machida
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Abstract

A microscopic model of the molecular magnet V15 is used to study mechanisms for the adiabatic change of the magnetization in time-dependent magnetic fields. Effects of the Dzyaloshinskii-Moriya interaction, the most plausible source for the energy-level repulsions that lead to adiabatic changes of the magnetization, are studied in detail. We find that the energy-level repulsions that result from this interaction exhibit a strong dependence on the direction of the applied field. We also discuss the role of magnetic anisotropy in the molecule Mn12 -acetate.

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H. De Raedt, S. Miyashita, K. Michielsen, M. Machida. 2003-12-22. Microscopic origin of the adiabatic change of magnetization in molecular magnets. https://arxiv.org/abs/cond-mat/0312581

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