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Non-exponential relaxation and the distribution of the second-order transverse anisotropic parameters in Mn 12

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  • Z.-D. Chen
  • S.-Q. Shen

Abstract

The Landau-Zener multi-crossing relaxation in Mn 12 molecule is studied based on the tunnel splitting obtained from the spin-coherent-state path integral including the local stray field. It is found that the spins with larger second-order transverse anisotropic parameters will finish the relaxation before the higher resonance is reached. Such a pre-relaxation seriously modifies the relaxation behavior at higher resonance and makes the distributions of the second-order transverse anisotropic parameters extracted from different resonances un-scaled. Our analysis shows that scaled distributions can be found from the relaxation curves of k=6 and k=7 resonance by including the effect of pre-relaxation. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Suggested Citation

  • Z.-D. Chen & S.-Q. Shen, 2005. "Non-exponential relaxation and the distribution of the second-order transverse anisotropic parameters in Mn 12," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 48(3), pages 405-408, December.
    • Handle: RePEc:spr:eurphb:v:48:y:2005:i:3:p:405-408
    DOI: 10.1140/epjb/e2005-00412-0
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