Microscopic origin of the adiabatic change of magnetization in molecular magnets

Details Microscopic origin of the adiabatic change of magnetization in molecular magnets Microscopic origin of the adiabatic change of magnetization in molecular magnets

2003-12-22

arxiv.org/abs/cond-mat/0312581v1

Physics

Condensed Matter

Materials Science

Scientific paper

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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