Magnetic Anisotropy in the Molecular Complex V15

Details Magnetic Anisotropy in the Molecular Complex V15 Magnetic Anisotropy in the Molecular Complex V15

2002-04-22

arxiv.org/abs/cond-mat/0204435v2

Phys. Rev. B 66, 174426 (2002)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Final version

Scientific paper

10.1103/PhysRevB.66.174426

We apply degenerate perturbation theory to investigate the effects of magnetic anisotropy in the magnetic molecule V15. Magnetic anisotropy is introduced via Dzyaloshinskii-Moriya (DM) interaction in the full Hilbert space of the system. Our model provides an explanation for the rounding of transitions in the magnetization as a function of applied field at low temperature, from which an estimate for the DM interaction is found. We find that the calculated energy differences of the lowest energy states are consistent with the available data. Our model also offers a novel explanation for the hysteretic nature of the time-dependent magnetization data.

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